1. News

New in 7.1.3

We’ve overhauled the entire app to improve stability and performance, and added some new features.

Markers are now also visible in the archive
eSense Pulse with new evaluation and reference values by gender and age (as an in-app purchase)
Module names freely selectable for procedures
Extended backup of the archive locally & in the cloud (as an in-app purchase)
Increased precision in the timing of recordings, especially in CSV export

Manual & FAQ: https://help.mindfield.de

2. Delivery contents Skin Response

Delivery contents eSense Skin Response

– Mindfield® eSense Skin Response Sensor
– 2 Velcro electrodes (and 2 spare-electrodes)
– eSense app from Mindfield (Apple App Store or Google Play)

Delivery Contents eSense Skin Response Bundle

– Mindfield® eSense Skin Response Sensor
– eSense app from Mindfield (Apple App Store or Google Play)
– 2 + 4 Velcro-Electrodes
– 50 pieces GSR single-use electrodes with gel
– GSR Finger Clips without gel, 2 pieces

Notes

If you would like to have a longer cable between the eSense and your smartphone or tablet, you can extend the original cable of the eSense. More about this in our article.

Some newer iOS devices without the classic 3.5mm headphone jack need an adapter. More about this in our article.

3. Technical Data

Measurement using direct voltage with a voltage source of 0.61V DC and a source resistance of 61.5 kOhm.

The maximum DC patient auxiliary current according to EN-60601 medical device standard is thus within the limit value of 10uA DC.

Sampling frequency: 5 Hz (5 measured values per second). The measured values are saved for exporting the data and can be exported as a CVS file in the app.

Resolution of the measured values: 18 bit, rounded to 2 decimal places, i.e. 0.01uS in data export without rounding.

Measuring range: 10 kilo-ohms to 1 mega-ohm corresponding to 100uS .. 1uS. Possible deviation of + – 5% over the entire measuring range on average.

4. Combination possibilities eSense sensors & Combined Feedback

The eSense sensors can be combined with each other with restrictions. You can use this combination in our eSense app in both an Open Training and a Procedure.

Since the eSense Skin Response, eSense Temperature and eSense Respiration each require the 3.5mm headphone jack in your smartphone or tablet, these 3 sensors cannot be combined with each other.

The video explains the exact procedure for combining the eSense. The settings in the eSense app are shown and how a later evaluation of the combined measurements can be made.

eSense Pulse

Since the eSense Pulse connects via Bluetooth®, you can combine the eSense Pulse with each of the other sensors (via the 3.5mm headphone jack).

This results in the following possible combinations regarding sensors and biofeedback parameters (in brackets):

eSense Pulse (pulse) + eSense Skin Response (skin conductance)
eSense Pulse (pulse) + eSense Temperature (temperature)
eSense Pulse (pulse) + eSense Respiration (respiration) (+ eSense Skin Response)*.

*The eSense Respiration can only be used in combination with the eSense Skin Response, as it is based on the Skin Response.

Combined measurement eSense Pulse & Skin Response

Combined measurement eSense Pulse & Temperature

Combined measurement eSense Pulse & Respiration

5. Analysis of eSense data (CSV)

You can export the data from the eSense app and then further evaluate it with other programs (such as Microsoft Excel™ or Google Spreadsheets™). In this guide we will show you all the steps, from exporting from the eSense app to importing and evaluating in Microsoft Excel™ and Google Sheets™.

For the eSense Pulse we also have a complementary article about the Kubios HRV software.

The examples shown in this guide are mostly related to the eSense Skin Response. In principle, however, data from the eSense Temperature, eSense Pulse, eSense Respiration or eSense Muscle can be processed in the same way.

Exporting measured values from the Mindfield eSense app

The app also includes an archive where you can save and export your recordings.

Export data

By tapping on the export icon in the upper right or by tapping the “Export as CSV File” button at the bottom you can export the recordings in .csv format with all common apps (e.g. send via Messenger™, WhatsApp™, email etc.) or simply on your phone or in your cloud (e.g. Google Drive™ or Dropbox™).

The data is exported as.csv file (comma-separated values). You can open this file format e.g. with Microsoft Excel™ or Open Office Calc™ (free alternative to Excel).

If you like working with Google, Google Sheets™ (Google Tabellen™ in German) can also be an alternative to Excel for you. You can also open and visualize your exported.csv files and easily access them from multiple devices via the cloud. Google Sheets has similar functions as Excel and a very similar operation.

General Note

The exported files are always CSV files. CSV stands for “Comma separated values”. This means that a comma separates the values in the file (,).

These CSV files can be opened and edited with programs such as Microsoft Excel™, Google Sheets™. It is also possible to import and edit with frequently used programming languages or frameworks such as R™, Python™, Numpy™ or Tensorflow™.

These instructions refer to Microsoft Excel™ and Google Sheets™. We recommend beginners to use Google Sheets™ rather than Microsoft Excel™, because it is easier to use and it often works better with our measurements (f.i. the seconds are not automatically prefixed to dates, see in the section on Excel). Google Sheets is also a bit better at quickly creating charts automatically. Using Excel makes more sense if you are already more familiar with Excel.

You can find Google Sheets™ here: https://www.google.com/sheets/about/

Your settings at Excel™ and Google Sheets™ are decisive. The eSense app adapts the measured values to the language used. In English, the numbers are usually separated by a dot. Therefore, 1.5 in the English version becomes 1,5 in the German version. So if you open the CSV file with Excel™ or Google Sheets™ and the numbers don’t make sense, it’s usually because of different languages in the eSense app and Excel™ or Sheets™.

In principle, therefore, the following applies: If you use Excel™ or Sheets™ in German, you should also use the eSense app in German. If you use Excel™ or Sheets™ in English, you should also use the eSense app in English. This saves you the first two steps (replacing decimal separators and splitting values into columns) and you can start directly with step 3 (Apply skin conductance against time).

Microsoft Excel™

1. Replace decimal separator (only necessary if you have different language settings in Excel™ and the eSense app)

Press Ctrl+H (search and replace).
Replace all commas “,” with semicolons “;” (replace the column separator)
Replace all commas “,” with periods “.” (replace decimal separator)
(Alternatively, you can change the decimal separator used by Excel™ by default: Click File – Options – Advanced. Deactivate the item “Take over separator from operating system” and select dot as decimal separator and comma as thousand separator.

2. Split values into columns (only necessary if you have different language settings in Excel™ and the eSense app)

The values for time and measured value are still in the first column, separated by commas or semicolons. You must divide them into two columns.

Select the entire first column A
Click on the “Text to columns” function in the “Data” menu
Select file type “separate” or “Delimited” and click on next.
Choose the separator comma (,) or semicolon (;) depending on which character separates the values
Click on “Next”, Column data format “General”, and “Finish”.

3. Format seconds correctly (optional)

Excel often formats the seconds in the first column automatically to a date. Unfortunately there is no way to disable this, it is preset by Excel. But there are a few ways to solve this: https://support.microsoft.com/en-us/office/stop-automatically-changing-numbers-to-dates-452bd2db-cc96-47d1-81e4-72cec11c4ed8

4. Draw skin conductance against time

Select both columns. The first column with the seconds and another column with the measured value depending on the eSense sensor (Microsiemens for Skin Response, Celsius/Fahrenheit for Temperature, heart rate or RR interval or HRV amplitude for Pulse, RR or breaths per minute for Respiration) completely. Then press the CTRL and Shift keys simultaneously, hold them down, press the left, and down arrow keys. With this abbreviation, you can quickly select both columns, even for thousands of measured values).
Select the diagram type “Scatter” in the “Insert” menu and then the diagram type “Scatter with smooth lines and marker”. You get a diagram with the time in seconds in the horizontal axis. Alternatively, you can also select “Line”.
Note: If you are using the latest version of Excel™, you can also try “Recommended graphs”. Often Excel™ already recognizes the graph automatically.

**Create diagram (points with interpolated lines and data points)**

**The finished diagram (Type Line) of a measurement with the eSense Skin Response**

**The finished diagram (Type Line) of a measurement with the eSense Pulse**

5. Draw skin conductance against markers

First create the diagram from the previous step 3 (Draw skin conductance against time)
In the menu under “Diagram tools” -> “Chart Design” select “Select data”. A new mask will appear.
Under “Legend entries (rows)”, select “Add”.
Enter a series name (for example “markings”) and select your markings for the row values (in column F)
Select from the menu “Add chart element” -> “Data labels” -> “More data label options”.
A menu will open on the right. There you can select “Label options” -> “Value from cells” (and deactivate “Value” if necessary). Another mask opens and you have to mark your marks from column D again.
If you also want the lines to the positions in the graphs, you must select “Add chart element” -> “Drop Lines”
You can now adjust colors or fonts.

**The finished diagram with markers of a measurement with the eSense Skin Response**

6. Draw skin conductance against SCR

First create the diagram from the previous step 3 (Draw skin conductance against time)
In the menu under “Diagram tools” -> “Chart Design” select “Select data”. A new mask will appear.
Under “Legend entries (rows)”, select “Add”.
Enter a series name (for example SCR”) and select your SCR/min for the row values (in column F)
In the menu under “Chart Tools” -> “Design” select “Change Chart Type”. A new mask will appear. In the tab, select “All Charts” -> “Combo” -> “Custom Combination”. For the SCR, select “Clustered Column” from the drop-down menu and make sure that the tick next to Secondary axis is set (see also following screenshot).

**Another Combo-Chart with Skin Response and SCR**

Google Drive (Google Sheets™, recommended)

As in Excel™, complications with the separators can also occur here. The exported files are always CSV files. CSV stands for “Comma separated values. This means that a comma separates the values in the file (,)

Google often tries to format the data automatically. Then it can happen, among other things, that the measured values are interpreted as date. To prevent this, you should first make sure that you select “Format” -> “Number” -> “Number”.

1. Replace decimal separator (only necessary if you have different language settings in Google Sheets™ and the eSense app)

Press Ctrl+H (search and replace).
Replace all commas “,” with semicolons “;” (replace the column separator)
Replace all commas “,” with periods “.” (replace decimal separator)

2. Split values into columns (only necessary if you have different language settings in Google Sheets™ and the eSense app)

Depending on their language settings, the values for time and measured value are both in the first column, separated by commas or semicolons. You must divide them into two columns.

Select the entire first column A
Click on “Data” -> “Split text into columns” in the menu
Choose the separator comma (,) or semicolon (;) depending on which character separates the values as seperator

3. Apply skin conductance against time.

Mark both columns (Second and Micro Siemens/Celsius/Fahrenheit) completely
(Tip: click with the mouse into the column where “Measured values” is written. Then press the CTRL and Shift keys simultaneously, hold them down, press the left, and down arrow keys. With this abbreviation, you can quickly select both columns, even for thousands of measured values).
4.3. Select “Insert” -> “Chart” in the menu. Note: Google Sheets™ often tries to automatically create the right chart. Sometimes this works well, sometimes it doesn’t. If the diagram does not make sense, simply continue with the next steps.
Click on the diagram. A dialog box should open at the right margin. Select “Smoothed line chart” as the diagram type. For “X-axis”, make sure seconds are selected. For the “series”, make sure that your measured values are selected.

4. Enter main conductance against highlights

Delete column C with the time stamp
Mark the column with your measured values and the column with your markings simultaneously (as shown in the following screenshot)
4.3. Select “Insert” -> “Diagram” in the menu. -> „Diagramm“. Note: Google Sheets™ often tries to automatically create the right chart. Sometimes this works well, sometimes it doesn’t. If the diagram does not make sense, simply continue with the next steps.
Click on the diagram. A dialog box should open at the right margin. Select “Smoothed line diagram” as the diagram type. For the “series”, make sure that your measured values are selected. Your markings should be selected as “Labelling”. See also the following screenshot:

**Another diagram showing SCR and markers**

The diagrams made via Google Sheets can also be embedded via iFrame.

6. Streaming eSense data to a PC/Mac/Browser (eSense Web App, OSC)

We offer advanced users such as biofeedback trainers, therapists and coaches the ability to stream the measurement data of the eSense sensors via the eSense app to a PC as well. Thus, group courses can be realized or remote training, whereby the trainee can be in a very different place than the trainer. Even a remote supervision is easy.

All features described below are not public but available on request. In our online shop, we offer an eSense set for professional users (https://mindfield-shop.com/produkt/esense-set-exkl-sdk) , where the use of these features is included in the price. After unlocking, you can see these features in the settings in the eSense app when you scroll all the way down.

Currently, we offer you two ways to transfer data from the eSense App to the PC: our eSense Web App or the OSC Transfer. Both can even be used in parallel but usually it makes sense to use either one of them. The OSC protocol is used for fast and timely streaming and actually comes from the music industry. OSC is open-source and there are a lot of possibilities to integrate the protocol into existing software.

eSense Web App

With the eSense Web App for iOS and Android, we have also developed an eSense web app for the browser, which mirrors and supplements the eSense mobile app.

You need an account for the eSense app and one of our plans. You can analyze your recorded data in the browser (with the basic plan) or even stream it in real time to a PC (with the premium plan). With the eSense Web App you can view the measurements of several and different eSenses simultaneously and in real time.

For example as professional user you can watch and look after a group of 5 different users, each with their own eSense. Different sensors, for example an eSense Skin Response with an eSense Pulse or Temperature or Respiration, can be freely combined. The users can even be distributed around the world. They just need a smartphone, an eSense sensor, the mobile app and a booked plan. More information about the plans soon here.

**eSense Web App at a live measurement with the eSense Pulse**

As a private user, you can also benefit from the fact that you can see the graph even better with a large screen and enlarge individual areas.

You will find the eSense Web App at https://esense.live. There you can log in with the same account (username and password) as for the eSense mobile app.

OSC Transfer

OSC (https://opensoundcontrol.stanford.edu) stands for “Open Sound Control” and is an open-source network protocol developed by the University of California at Berkeley. It is widely used in the music industry because it is great for processing different signals in real time (for example, at a concert where it is important to match multiple microphones and lights in real time).

This makes this protocol particularly well suited for the data transmission of several eSenses in real time. Due to the wide distribution in the music industry, there are already some extensions and plugins which you can adjust relatively easily and use in a self-designed software. These are usually found in all common programming languages like for Android, iOS, Java, Javascript, C ++, Python and many more.

To use OSC with the eSense app, you must define the IP address of the user receiving the data. This can be a local IP address or an IP address on the internet. You can define the ports as you wish. You should pay attention to firewalls, as they like to prevent the flow of data.

You can also define a variable in the app to be able to assign different eSense. This will allow you to sort or filter the eSense (or users) and analyze it better.

The OSC transfer is aimed at programmers of (Windows or Mac) software who want to integrate the data from the eSense. The available OSC libraries in the usual programming languages make such integration very easy.

You can enable OSC Transfer in the general settings in the eSense app (see screenshot)

7. Duplicate eSense on a large screen (screen mirroring)

With the eSense app, it is possible to display the screen content of a tablet or smartphone on a larger screen, which is known as stream mirroring. This allows you to watch your biofeedback training at home on your big screen TV, for example, which can improve your training.

The following instructions can be used with all eSense devices. An adapter is always required:

Smartphone / tablet (with the eSense app) Adapter TV / projector

We generally recommend iOS devices.

Android

With Android, it only works with newer devices that have a USB-C output and a 3.5 mm jack plug. Android devices with micro USB do not work.

Our recommendation is this adapter on Amazon:

JSAUX USB C HDMI Adapter, 4K USB Type-C Thunderbolt 3 auf HDMI Adapter https://amzn.to/3Use9Hp

eSense Skin Response, Temperature and Respiration: If your device no longer has a 3.5mm jack plug and you are already using a USB-C to 3.5mm jack adapter for the eSense, unfortunately you cannot use the USB-C to HDMI adapter.

Wireless with HDMI dongles (Miracast / Chromecast etc.)

We have had rather mixed experiences with the common HDMI dongles. There are many options, but the dongles generally require an external power supply and are rather complicated to set up.

We therefore advise against using them, but in principle it works and is an alternative if no further adapter is available in the device (because the device only has a USB-C but no longer has a 3.5mm jack plug).

iOS

You can connect a Lightning Digital AV Adapter or a USB-C Digital AV Multiport Adapter to the Lightning port of your iOS device and use an HDMI cable (sold separately) to connect your iOS device to a TV or projector.

In principle, this is possible with any iPhone, iPad and iPad Pro that are also compatible with our eSense app.

We expressly recommend only original Apple adapters. Others may work under certain circumstances if they have MFI certification. However, Apple could change something at any time, so we do not recommend third-party adapters, which may not be updated quickly enough and may no longer be compatible.

You can find the original Apple adapters on Amazon:

Apple Lightning Digital AV Adapter https://amzn.to/3y7ndtY

Apple USB-C-Digital-AV-Multiport-Adapter https://amzn.to/3wdvoEx

eSense Skin Response, Temperature and Respiration: iOS also requires a USB-C to 3.5mm jack adapter for these eSense devices (this is not required for the eSense Pulse and Muscle as they connect to the smartphone or tablet via Bluetooth).

This means that if you want to use an iPad with the eSense, it should also have a 3.5mm jack connection. The iPad Mini 5 would be an example, this is slightly older, but still has the 3.5mm jack connection. For normal iPads, the 9th generation devices were the last with the 3.5mm jack connection. We recommend https://www.refurbed.de/c/ipads/ or https://www.rebuy.de/kaufen/apple-tablets to purchase these at a reasonable price.

Wireless with Airplay

We have had good experiences with AirPlay. The setup at Apple is very simple, the best solution is probably a used Apple TV from 50 euros: Apple TV 4K Gen 1 https://www.refurbed.de/p/apple-tv-4k-5th-gen/

Mini projector

There are now also relatively good mini projectors available for an acceptable price. In our experience, these are not particularly bright, but in a sufficiently dark room they are an option.

The projector only needs an HDMI input.

8. EC Declaration of Conformity

in accordance with the following directive(s):

The Electromagnetic Compatibility Directive (EMC) (2004/108/EG)
RoHS – Restriction of (the use of certain) hazardous substances (2011/65/EU)
WEEE Waste Electrical and Electronic Equipment (2002/96/EG & 2008/34/EG)

The manufacturer

Mindfield Biosystems Ltd.
Hindenburgring 4
D-48599 Gronau
Germany

WEEE-Reg.-Nr. DE 24465971

hereby declares that the following product:

„Mindfield® eSense Skin Response“

complies with all applicable essential requirements of the directives.

It is in conformity with the applicable requirements of the following documents:

DIN EN 60950-1 Information technology equipment – Safety – Part 1: General requirements (2011-01)

DIN EN 55022 Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement (2008-05)

DIN EN 55024 Information technology equipment – Immunity characteristics – Limits and methods of measurement (2011-09)

Place: Gronau
Date: 19th of August 2017
Niko Rockensüß, Managing Director

According to legal requirements, the Mindfield eSense has to be recycled as electrical waste.
WEEE-Reg.-Nr. DE 24465971

9. Contact

Mindfield® Biosystems Ltd. · Hindenburgring 4 · D-48599 Gronau

Tel: + 49 (0)2565 406 27 27 · Fax: + 49 (0)2565 406 27 28 · E-Mail: info@mindfield.de

If you have questions about our products or need support, please do not hesitate to contact us! To avoid inappropriate advertising and spam, we ignore messages with specific content. We therefore ask you to not write links in the contact form. If this should be necessary, please write us an email.

Please do not send unsolicited packages to us. Unfree returns will not be accepted and cannot be processed.

10. General information about skin conductance

The term “skin conductance” refers to measurable changes in bioelectrical properties of the skin. The skin conductance depends on the activity of the skin’s sweat glands and reacts to even the smallest changes, which are far from being perceived by us as wet hands. A very small, completely harmless and imperceptible electrical voltage is applied to the skin via the two electrodes of the eSense Skin Response, over which a very small current flows. The greater the activity of the sweat glands, the moister the skin and the better the current is conducted. The skin conductance increases as a result.

The eSense Skin Response measures skin conductance in micro-Siemens (µS, µ means “millionths” and “Siemens” is the unit of conductivity). The term “skin resistance” is also commonly used to describe the same phenomenon and refers to the reciprocal of the skin conductance (1S = 1/Ω).

The activity of the skin’s sweat glands is determined by the autonomic nervous system. Sympathetic and parasympathetic nervous systems are parts of the autonomic nervous system. The sweat glands of the skin are innervated exclusively sympathetically, i.e. without the influence of the parasympathetic nervous system, and are thus a good indicator of “inner tension”. When exposed to stressful stimuli, the sympathetic nervous system activates all the emergency functions of the organism and puts it in a heightened state of readiness to act: pulse and blood pressure rise, glucose levels in the blood increase to provide a readily available source of energy, and the level of attention becomes higher. Of central importance to the measurement process explained here is that the hands become moist.

We also often know these situations from our own lives. For example, think of a speech you gave in front of a group or a job interview. If you were excited in these situations, you can certainly remember the cold, proverbial sweaty hands?

One theory on the cause of this phenomenon is that our ancestors’ moist hands gave them a better grip when grasping in stressful situations, such as when fleeing through terrain. Once the threatening situation is over, the parasympathetic nervous system gains the upper hand: pulse and blood pressure slow down, and the glucose circulating in the blood decreases. The organism is switched to rest to ensure recovery. The hands become dry again.

The increasing activity of sweat glands and consequently the increase of skin conductance is clearly visible under the influence of a stress stimulus. This stimulus can be mental activity, emotional arousal, deep breathing or even a startle, for example, by unexpected clapping of hands or loud dropping of an object on the floor. Try it out for yourself with the eSense right now!

We combine the measurement and feedback of skin conductance in the eSense app with guided relaxation exercises, including guided meditations, and offer you an overall experience beyond biofeedback. In addition to extensive feedback options, you have the possibility to evaluate their measurements with many statistics, document your progress and export the records as CSV and PDF files. Your data belongs only to you! You have full access to the raw data.

11. Skin response and biofeedback training

Stress and its vegetative symptoms can be greatly reduced through biofeedback training, where you intentionally work on lowering your skin response.

Skin response is a universal tool for biofeedback training. It is widely used in the therapy of anxiety, panic disorders and specific phobias. Further fields of use are high blood pressure, tinnitus and sleep disorders. If you suffer from a serious disorder or medical condition, always consult a professional physician or therapist, and do not attempt to treat yourself. The eSense Skin Response is not a medical device and may only be used for stress reduction training.

The Skin Response is a precise device. It can measure the smallest changes which would be impossible to recognize yourself. Have a look at the following example of a measurement to see how insightful the results are

**Example measurement curve eSense Skin Response with several, clearly visible peaks**
**because of stressors. The peaks are recognized and colored by the app.**

Measurements are done by placing two electrodes on two fingertips of the same hand. The dark-colored lower side of the electrode should be in good skin contact. Other positions for the electrodes and other electrode-types are possible as well.

The goal of the feedback training is twofold: A reduction of the permanent, basic level of stress and a reduction of the immediate stress response to a particular stimulus. A biofeedback training consists of four training stages. Schedule for the first training about 60 to 90 minutes of free time in which you can conduct the training undisturbed and flexibly.

It must also be differentiated between different types of stress. There is “bad stress,” distress, and there is “good stress,” eustress. You need to ask yourself if you are stressed because you feel overwhelmed and are angry about something or because you are upset. Or are you “stressed” because you are full of drive and are excited? In both cases, the eSense Skin Response shows elevated values. However, in the first case, this is to be judged negatively. In the second case, you can simply enjoy and use the active or euphoric state.

12. Skin Conductance Response (SCR)

The Skin Conductance contains two components: the tonic, static „level“ and the phasic, fluctuating „reactions“, and these components are usually designated as Skin Conductance Responses (SCR).

While the “level” is represented well in the average of the measured values, the eSense Skin Response also measures the amount of Skin Conductance Response (SCR) per minute. In general, a higher number of SCR per minute is an indicator for higher stress. Value from experience which is in alignment with scientific literature[1] suggests that a “relaxed” frame is between 0 and 5 SCR per minute. From 6-9 SCR/min starts an animated state. From 10 or even from 16 SCR/min, a level of stress or even high stress can be assumed.

[1] Boucsein, W. B. (2011). Electrodermal Activity (2. Aufl.). Berlin, Deutschland: Springer.

The SCR are great for comparing biofeedback-sessions to each other. If your goal for training is a reduction of stress, then the amount of SCR/min should decrease over several sessions. In the archive of the app, you can compare the different sessions to each other.

The average value in µS of a session is an indicator for the “level,” hence how high your basis level of tension or relaxion is. You should also try to lower this while you are doing stress reduction training. The average value also takes the SCR into consideration and is falsified with many SCR/min. You should, therefore, use as quiet a frame as possible without any SCR to determine your own “stress level” in µS.

We have colored the SCR/min in the eSense app. Low SCR are green or yellow and high SCR/min are orange or red. While making a measurement, the recognized SCR are colored within the curve. Two examples from our app:

**Example of a measurement in a relaxed state with little SCR/min (green and yellow)**

Example of a measurement in a stressed state with more SCR/min
(yellow and orange)

In the right diagram, there is also the time in which the values rise, fall or have been steady. With rising stress, the curve rises more often and longer than it keeps steady or falls. This is also an ideal parameter to analyze and to compare biofeedback sessions.

The whole process of detecting and calculating the SCR is a cycle of four steps:

Listening state
Determining if the signal raise is really a SCR
Gathering and calculating SCR and listening asynchronously for SCR recovery phase
Initiate recovery phase and end of fluctuation

Listening state		Determining if the signal raise is really a SCR

Initiate recovery phase and end of fluctuation		Gathering and calculating SCR and listening asynchronously for SCR recovery phase

The 4 Steps in detail

1. Listening state

The cycle starts in the first step, the listening state. This is the standard default state.

2. Determining signal raise

There are two ways for detecting the start of an SCR start. The values could either raise slowly with a small step or very fast with a big amplitude. This creates the following to conditions:

The signal is constantly rising for 2 seconds
The difference between the current signal and the pretended base value (the value that is considered to be the first value in the rising signal. But on this stage, it is not confirmed yet as a base value) is greater than 0.5 micro siemens.
In simple words the app will react to a sudden signal raise and confirm it as the fluctuation start and will not wait for 2 seconds (as in the first condition above)

If the signal will fall just even 0.1 micro siemens during a raise, the app will drop out of this second step and return to the first step (the listening state) again. Otherwise it will continue with the next two steps 3 and 4.

3. Gathering and calculating SCR (fluctuation)

If one of the two conditions from the second step above are met, the app enters this third step, the fluctuation. The first signal of the fluctuation period is the base value of a fluctuation signal. During the whole fluctuation period, the app is detecting the amplitude which is constantly changing. Then the app starts to calculate the SCR events globally and within a one-minute time window. This results in the SCR/min value.

4. Initiate recovery phase

The fluctuation is considered to enter the recovery phase (the end of fluctuation) when the signal falls for more than 50% of the greatest amplitude of the fluctuation period.

This is also the step where the color in the graph is changed (based on the quantity of SCR events that were occurring). The colors for the SCR background are also calculated (by dividing time intervals into equal segments and getting the sum of the SCR events from each segment).

13. Preparation and start of the app

Create the conditions needed for a successful training:

find a quiet room (mobile phone etc. switched off)
appropriate temperature of 20-22° C (68-72° F)
convenient seating
comfortable clothing

You should avoid all conditions that can make you sweat out of purely physical reasons, like intense physical activity before training or intense sunlight and heat. This could falsify your measured values. To obtain comparable results, you should try to keep your initial and ambient conditions constant through the series of training sessions.

In comparison with other biofeedback techniques, you will need fewer sessions for a reliable success. 6-10 sessions should be sufficient. To keep focused throughout the entire session, you should limit each session’s length to about 30 minutes. If you start feeling tired while training, you should shorten your sessions and practice more often instead.

Fixation of the Velcro-electrodes

Wrap the two electrodes around the upper or middle phalanges of your index and middle finger of the same hand. The dark lower side of the electrodes shall be in good skin contact. Using the non-dominant hand is advisable (e.g. the left hand for right handed people) because the skin tends to be a little less callused there. Attach the cables and wrap the tape another time around their clips to ensure a firm contact.

**eSense Skin Response in use with a tablet**

**eSense Skin Response in use with a tablet and the finger clips**

You should neither tape the electrodes too firmly where you would block blood circulation, nor too weakly so as to let them slip and move around. Put your hand down onto a comfortable support where it can rest.

Another note: If your values are below 1µS, the electrical contact through the clip is bad, or your skin is dry and maybe callused. Check the contact clips, or change your hand or the position of the electrodes if necessary. If the conductance is permanently bad, we have listed several tips in the FAQ for the eSense Skin Response to improve the conductance. Usually gel electrodes are necessary. Don’t continue with the training if the values are below 1µS and solve the cause first.

The next step is to start the app. At the beginning you can choose between a free training and a procedure. We recommend that you start with a procedure. We present you both below.

Wählen zwischen Prozedur oder freien Trainings nach Start der App

14. Procedures

A procedure consists of several assembled modules. With this new feature, you can build the perfect individual relaxation guide, do a stress test, use it for pre-defined biofeedback training or use it for research.

There are many possibilities. During a procedure, your skin response or temperature (depending on the eSense sensor you have) will be recorded, and after the recording is made, you can see your results for each module and in total.

We suggest you test the demo-procedures which are included in the app. Those will give you a guided overview of the different modules and functions of the procedures.

The included procedures are also protected by a password in order that those can’t be edited or deleted by accident. You can any time create a copy of those procedures without a password and change it as you wish.

We also explain in detail how you can create and edit your own procedures in the chapter procedures settings.

15. Open Training

As a second option you can also conduct an open training. This is compared to the procedures a bit more complex. We therefore explain a typical open training session which consists of 4 training phases.

Preparation and start

Follow the first steps of preparation from the previous chapter and choose an open training in the selection screen after starting the app
Tap on Start and have a first look at the measured values
For the interpretation of the measurement, we distinguish between “tonic” and “phasic” effects. The tonic component is the longer-term average of skin conductance and its development during one session. Values for the tonic level can vary between 1 to 15 µS, depending on the individual and the situation.

In contrast, rapid changes (in the app, fluctuations are called SCR [Skin Conductance Responses]) of skin conductance, often caused by a sudden stimulus but also appearing spontaneously, are the phasic component of the skin response. The stimulus can appear spontaneous or as a reaction to a stimulus. The cause of a phasal effect can be internal (thoughts, memories, and emotions), or external (images, sounds, and events).
In a state of heightened excitation, both the general tonic level and the rate of spontaneous fluctuations is increased. With low excitation and rest comes a lower tonic level and fewer spontaneous fluctuations.

**Example for a situation with rising stress**

First stage (observe and experiment; determine your initial status)

Record your baseline state for ten minutes at rest without influencing the measurement. Relax as best as you can and do NOT watch the measured values for the whole ten minutes, as it would compromise a true baseline measurement.
Have a look at the complete curve and its average tonic level after the first ten minutes. Does it rise or fall in certain phases, or is the general level constant throughout the measurement? How would you judge your ability to relax during the exercise? Maybe you can already find dependencies between the objective measurement and your subjective feelings of relaxation or excitation. If you find no connection, don’t worry; you will find a connection during the sessions to come. Keep notes on the general level of the curve and the approximate number of fluctuations per minute to know your initial training status. Both of those values are shown above the graph.

**Example of a measurement curve (after 5 minutes duration the background is colored)**

After completing the ten-minute baseline, you will be shown a survey first. Answer the questions and take notes if necessary. Answer the questions and take notes if necessary. Then you’ll see the pie charts that show you the fluctuations per minute (in the best case, everything is green) and how often the readings have risen, stayed the same, and dropped. There’s more on this topic later.
This is your initial training state. Of course, the day also plays a role here: it should make a difference whether you measure after a stressful working day (or even at work) or at the end of a relaxing weekend. Use the corresponding function of the app to export this baseline as a CSV file. You can do this by calling the measurement in the archive. This will allow you to access your baseline later (in addition to the archive) by other ways (such as Excel).
One more note: If the readings continue to increase for no apparent reason, the electrodes may be too tight and may simply be the cause of sweating underneath. This moisture should be noticeable.

Second stage (targeted Biofeedback training with the skin response)

The second stage consists of multiple sessions.These sessions should always follow the following scheme. You shall now exercise conscious relaxation with the feedback signal.
Start the measurement and watch the values for a while. Then try to bring them down through active, conscious intervention. There are many ways to do this, such as breathing in a controlled and calm pattern, using techniques of muscle relaxation or autosuggestion. The exact way is up to you, your knowledge on relaxation and your will to experiment. Also observe small changes in the measured values. A part of the training focuses on the general reduction of the tonic skin conductance level, while a second part focuses on the reduction of the fluctuations.
Both the intensity of a stimulus and its subjective significance will influence the amplitude of the consecutive skin response. The stimulus can be internal in nature (thoughts, memories and emotions), or external (images, sounds and events). Inevitably, it will happen to you that you feel less able to relax; for example, because of negative thoughts. If you notice a rising skin response as a result, try to bring it down again. Taking a deep breath brings up the skin response as well, so try to bring it down again.
In the second training phase, the aim is to lower the general level of skin conductance and reduce the increase as a result of a stimulus as quickly as possible. They train to reduce their general tension and be able to switch off flexibly after stressful situations. In the app, you should decrease the average of your sessions and the number of fluctuations (SCR / min and total SCR).

Third stage (deliberate provocation, relaxation and stress coping)

We will now actively use stress stimuli (stressors) to improve your ability to deal with them. Skin conductance biofeedback is particularly suitable for the use of targeted provocation methods because it shows a timely and sensitive response to a stimulus, and because this response is also proportional to the strength and significance of the stimulus.
Start the measurement and watch the values for a while. Then try to relax. The training starts with a rest period of a few minutes.
Now a selective stressor should be applied. This can be a certain thought, sound or image with a negative connotation. Almost every person knows certain things or situations that distress themself. For example, if you have trouble speaking out loud before a larger group of people, try to imagine the situation and hold a speech before them. Under the influence of such a stressor, you are likely to see a surge in skin response. Try to relax to bring it down again and reduce the spontaneous fluctuations.
Alternate phases of relaxation and stress stimuli during the session. After three or four rounds, you should finish the session with a relaxation phase. Also, don’t overstrain yourself. Perform multiple sessions over a longer period of time until you have the impression that your stress response is significantly reduced, or you recover quicker after a stressful situation.

Fourth stage (transfer; relaxation without feedback)

Now you can check if you can achieve improved relaxation with lower skin response levels and less fluctuations, even without feedback. Record a ten-minute baseline WITHOUT watching the measurement while relaxing as best as you can. Afterwards, compare it to the baseline measurement from the first stage. Your overall level of skin conductance should have dropped, and/or the spontaneous fluctuations should have reduced. Your daily condition can affect the measurement a lot, so repeat the record of the baseline later again if you feel you had an unusual day.
As a more challenging transfer exercise, exert stress stimuli on yourself as you did in the third stage, but this time WITHOUT looking at your values. Try to maintain your relaxed state and check afterwards if you succeeded. Have you been able to keep your skin conductance comparatively low and limit the amount of fluctuations, even without the immediate feedback by looking at the values? If you’re able to do this, and your baseline has also dropped in comparison to the first stage, you have successfully completed the stress reduction training. When you encounter stress situations in everyday life, recall the training situation, and use your new skills to stay relaxed. Skill comes with practice!
Our eSense app offers not only the free training but also procedures. These are ready-made training programs that you can customize according to your wishes. For the best comparability of training sessions, these should always be performed under identical conditions (same time of day, electrode position and type) and of approximately identical duration. The procedures are a great help. For more information, see the relevant section of this manual.

16. Electrode types

The eSense Skin Response has a standardized push-button electrode connection. Therefore, it can be used with a wide range of electrodes.

In order to ensure the comparability of measurements, once a specific type of electrode has been selected Once an electrode type has been selected, it should be used throughout.

Please also note that 2 Velcro electrodes (and two spare electrodes) are included in the Skin Response delivery and 2 + 4 Velcro electrodes, 50 gel electrodes and 2 finger clips are already included in the Skin Response Sparset with additional electrodes. More in the article on the delivery contents.

Velcro electrodes

+ Easy to use

+ Reusable

+ Cheap

– Worse conductivity

You can order Velcro electrodes here: https://mindfield-shop.com/en/product/eda-velcro-electrodes-for-measurement-of-skin-conductance-8-pieces

Finger clips (without gel)

+ Easy to use

+ Reusable

+ Comfortable

– Worse conductivity

You can order the Finger clips here: https://mindfield-shop.com/en/product/gsr-finger-clips-without-gel-2-pieces

Gel electrodes (disposable)

+ Easy to use

+ Best quality of signal

– Useable just once

Our prior recommendation

You can order the gel electrodes here: https://mindfield-shop.com/en/product/emg-ecg-eda-single-use-electrodes-for-adults-with-comfortable-breathable-fabric-pre-geled-50-pieces

17. Possible electrode positions

General information for the skin preparation (independent from the electrode type): Skin preparation or skin cleansing is usually not necessary and also not recommended. It is enough to wash the hands, although the soap dries the skin and lowers the measured values. The same applies to the skin cleansing with alcohol. Greasy skin or skin that has just come into contact with hand cream should be freed of oily residues by being washed with lukewarm water and alcohol (70%) if necessary.

Velcro electrodes

Wrap the Velcro electrodes around the upper and middle phalanx of the index and middle finger. Make sure the silver electrodes touch the surface of your skin directly. Then connect the press button wires with the electrodes. You can wrap the Velcro around the press button ends once again to stabilize the wires, as shown in the right image.

Gel electrodes

We recommend the single-use gel electrodes. There are three different possibilities of the areas of conduction, as shown in the images. All positions are equivalent. Simply connect the electrodes wire through the press button connectors with the electrodes.

Finger clips (without gel)

These EDA finger clips are simply put on the fingertips of the index and middle finger. Then the press button wire of the eSense connects with the electrodes (here, the wire should run forward towards the notch inside the clips).

18. Extending the cord of the eSense

If you wish to use a longer cord between the eSense and your smartphone or tablet, you can extend the original cord of the eSense with a common, 4-pin, 3.5mm jack headset extension cord. We have tested three cords that have worked well:

2m cord: https://amzn.to/2kil5bj
0,5m cord: https://amzn.to/2kEB8xo
110cm cord: https://amzn.to/2k7TBm8

All three suggested cords cost between £6-8 and are available from Amazon. Alternatively, you should be able to use other 4-pin cords as well.

19. Smart Bulbs (optional)

**Smarte Glühbirne in Verwendung mit dem eSense Skin Response**

The eSense app can support biofeedback via smart bulbs. Smart bulbs can change their colors and brightness and can be controlled via Bluetooth®. In combination with the eSense app, smart bulbs indicate your level of stress or relaxation through their lights.

Currently, the eSense app supports the Magic Blue and Phillips Hue smart bulbs. Both are smart bulbs which can be controlled via Bluetooth®. The color as well as the brightness can be adjusted. From within the eSense App, you can connect to the Magic Blue or the Phillips Hue and use it in your biofeedback session. Here you connect to the Hue Bridge from the eSense app and select the desired lamps.

Magic Blue

Unfortunately, the Magic Blue is no longer in production. We have extended the eSense app to enable the use of Philipps Hue smart bulbs, which can be controlled via Bluetooth.

But you still can find more information about the Magic Blue in our article

Philips Hue

You should be able to find the Phillips Hue in every well-sorted electronic store. You can also order it online. A list of the on- and offline-merchants can be also found on the page of the Phillips Hue: https://www.philips-hue.com/en-us

We suggest you use one of the starter kits from Phillips, with the eSense. This also contains a colored bulb (‘Color Ambience’): https://amzn.to/3uzSFx8.

The use of Philips Hue is available as an in-app purchase in the eSense app.

You can also find more information about the Philips Hue in our article.

20. Philips™ Hue™ FAQ

eSense App and Philips Hue

Which products from Philips Hue can I use with the eSense app?

In general, all Philips Hue products are compatible with our eSense App and therefore can be used together with the eSense. We tested the most common products:

Philips Hue White
Philips Hue White Ambiance
Philips Hue White and Color Ambiance
Philips Hue Go (very nice!)
Philips Hue LightStrips White and Color Ambiance

For the best experience, we recommend the Philips Hue White and Color Ambience, because with the colors, the feedback can be enhanced more than with only white colors. Especially we recommend using the Philips Hue Go, as it is mobile with battery and a very nice, complete lamp.

How do I connect to the Philips Hue within the eSense App?

You have 2 options: You can connect the Hue in the eSense app via the bridge with Zigbee or directly via Bluetooth (which is mainly the case with the newer Hue lamps).

To connect to the Philips Hue products, open the eSense app and follow these steps:

Choose the eSense sensor you want to use
Choose the ‘settings’ (cogwheel symbol)
Activate the “Smart bulb feedback” and select one of the two Philips Hue light bulb options (either the “Philips Hue ZigBee™ + Bridge” option or the “Philips Hue Bluetooth™” option)
Press the “Change Hue settings” button for the Bridge option or select your Philips Hue for the Bluetooth option
For the Bridge option: Select “Find Hue Bridge” in the tab at the top right and then click on the plus symbol at the bottom right. Follow the instructions
Next you can choose the lamp(s) under ‘Hue lamps’ in the upper left. You see a list of available lamps and you can choose each with the tick right next to it. Selected lamps light up, deselected turn off.
(You can also test the selected light bulb by tapping on “Test”. If this changes the color or brightness of the light bulb, this light bulb is connected)
Once you have selected the bridge and/or bulb(s), exit the settings by tapping on the tick in the top right-hand corner. The settings are now saved for you

How do I connect the Philips Hue within the Hue App?

Download and Install Hue Bluetooth App: Download and install the Philips Hue Bluetooth app from your device’s app store. Ensure that your device supports Bluetooth Low Energy (BLE).
Power On Your Hue Lights: Make sure your Philips Hue lights are connected to a power source and turned on. The lights should start emitting a default light pattern once powered on.
Enable Bluetooth on Your Device: Turn on the Bluetooth feature on your smartphone or tablet. Make sure it’s discoverable.
Open the Hue Bluetooth App: Launch the Philips Hue Bluetooth app on your device. Follow any initial setup instructions or prompts.
Add Lights: In the app, navigate to the “Settings” or “Add Lights” section. Look for an option to “Add New Lights” or “Scan for Lights.”
Scan for Lights: Initiate the scanning process within the app. The app will search for nearby Philips Hue lights that are ready to connect via Bluetooth.
Pair the Lights: Once your lights are detected, select them from the list within the app. Follow the on-screen instructions to pair each light with your device. This process may involve confirming pairing requests and assigning names to each light.
Control Your Lights: Once paired, you should be able to control your Philips Hue lights directly from the app. Adjust brightness, color, and other settings to suit your preferences.
Optional: Set Up Rooms and Scenes: Organize your lights into rooms and create custom scenes for different ambiance settings within the app, if desired.

How many Philips Hue bulbs/products can I use with the eSense app?

We have successfully tested up to 9 products/bulbs (mixture of different type of bulbs, Hue Go and LightStripe). However, from 3 products and more the reaction time of the products/bulbs slows down significantly (Philips enables a maximum transfer speed of 100ms per signal and per bulb).

Especially if you use several bulbs, a short distance to the Philips Bridge, the bulbs and your smartphone or tablet becomes more relevant. See also the next question about this.

How far can the Philips Hue, the Hue Bridge and the smartphone or tablet be away?

Usually the range is between 30 and 100 meter, depending on the environment. The range is less with objects in between (for example a wall in between can decrease the range). Also, if the Hue Bridge and your modem should be in another floor level, it can influence the range.

However, the transmission of the signal by Philips is good enough so that there weren’t any problems with our tests in normal households with the signal. Just from 4 (and more) bulbs at the same time a recognizable lag can occur, see also the question above about this. A warning will be displayed in the app if you want to use more than 3 lamps at the same time.

Where can I buy the Philips Hue products?

We suggest one of the starter kits from Philips for the use with the eSense. This also contains a colored bulb (‘White and Color Ambience’): https://amzn.to/3uzSFx8

21. Magic Blue FAQ

I can no longer find the Magic Blue in the Mindfield Shop.

Unfortunately, the Magic Blue is no longer in production. We have extended the eSense app to enable the use of Philipps Hue smart bulbs, which can be controlled via Bluetooth.

How do I connect to the Magic Blue?

You connect to the Magic Blue from inside the eSense app. To connect to the Magic Blue, open the eSense app and follow these steps:

Choose the eSense sensor you want to use
Choose the ‘settings’ (cogwheel symbol)
Enable the ‘Smart bulb feedback’ and choose ‘Magic Blue’ as the bulb type
Tab on the ‘Choose A Bulb’ button and select the bulb from the list that you want to connect to
(You can also test the chosen bulb by tapping on the ‘Connection Test’ button. If the color of the bulb changes by this, the bulb is connected.)

After you have followed these steps, the app will remember the Magic Blue you have chosen (you usually don’t need to follow these steps again, unless you want to use another Magic Blue).

You should not pair the Magic Blue by the device generic Bluetooth® settings.
(Attention: If you pair your bulb that way, you won’t be able to find and select the Magic Blue from inside the eSense app. If you did so by accident, simply un-pair the Magic Blue from the generic Bluetooth® settings and follow the steps above).

What can I do, if connecting to Bluetooth® fails or the Magic Blue is not found?

Restart the Magic Blue (switch the switch of your lamp off and on again). Especially if the Magic Blue is already switched on more than 1 minute, the Magic Blue stops sending the Bluetooth® signal to connect. Restarting activates the signal again and the Magic Blue can be found.

Why can’t I find the device when scanning for Bluetooth® devices?

Check the light from the Magic Blue to make sure the Magic Blue is switched on. If there is metal around the Magic Blue (for example a lampshade around the Magic Blue), it could shield the Magic Blue and block the signal.

Make also sure that the Magic Blue is not connected to another phone or tablet already since the Magic Blue can just be connected to one phone or tablet at a time (see also next question).

How many Magic Blue bulbs can I control at the same time?

You can control one Magic Blue at the same time.

How far can the distance between Magic Blue and phone or tablet be?

Usually the range is 18 to 30 meters without any objects in between. It will be less with objects between the Magic Blue and your phone or tablet (for example a wall between the Magic Blue and the smartphone or tablet can decrease the range).

How can I reset the Magic Blue?

Just follow this video to do so:

22. Functions of the Mindfield eSense App

The eSense comes with the eSense app which you can load for free in the Google Play Store (Android) or Apple App Store (iOS).

It offers a wealth of features for effective biofeedback training in a modern design. Essential functions are: the display of measured values as a bar graph, an oscilloscope, feedback via video, music, sound, vibration, and smart bulbs (Magic Blue and Philips Hue). You receive a comprehensive evaluation after each measurement and can compare measurements with each other in the archive and export them as CSV files.

The app is available in English, German, Spanish, French, Italian, Portuguese, Ukrainian, Russian, Turkish, Dutch, Japanese and Chinese. The language is chosen automatically according to the set language of the smartphone or tablet.

Download Links

iOS: https://itunes.apple.com/us/app/mindfield-esense/id1141032160?mt=8

Android: https://play.google.com/store/apps/details?id=com.mindfield.boisystem.esense

23. General notes

If the text on your Android device is sometimes cut off the reason can be a larger font in the system settings (especially for Huawei). In the Android settings, there is usually a way to adjust the font size and display size. It’s best to set this to “standard” or “default”, otherwise it can cause problems with app.
For data files which you can load as own media into the eSense App, the general limitations by Android and iOS apply. We have successfully tested the following:
- Images: PNG and JPG (GIF can be loaded but isn’t animated)
- Audio: MP3, WMA and WAV (Android) and MP3, WAV and AAC (iOS)
- Videos: MOV, MP4, AVI and 3GP (Android) and MOV, MP4 and M4V (iOS)
- If your audios or videos are in other formats, you can easily convert the files on your PC. To do this, use a free tool like Any Video Converter: .
- Another tip: You can also directly download videos from Youtube and format them to the right format (MP4) with tools like .

In following the app is described in full details.

24. General view & Open Training

Portrait

Time elapsed
Momentary value
Overall maximum
Overall minimum
Difference between minimum and maximum
Indicator for rising or falling values
Scale for skin conductance (µS)
Zoom for conductance scale
Momentary value
Start, pause and stop of the recording
Open Training
Procedures
Archive
Help
Settings

Landscape

Absolute decrease of measured values
Absolute increase of measured values
Current SRC pro Minute
% of SRC of session
Swipe the screen to the left or right to change between this main screen and the other views. After the measurement, you can also swipe to the pie charts.
Set marker

25. Breath Pacer (optional)

If you have toggled this option on in the settings, you can have the Breath Pacer displayed. In the settings you can choose between line, sphere or animation.

You can configure the breath pacer in the settings. There you can freely choose inhalation time, hold, exhalation and hold in 0.1s increments.

26. Biofeedback Snake

**Biofeedback Snake for the Skin Response**

You can also display the Biofeedback snake as an additional option. At the top left are appearing symbols which vary in color depending on the current measured value. The symbols are either green (further positive direction), yellow (slight negative direction), orange (strong negative direction) or red (very strong negative direction). After 10 green symbols you will also be rewarded with a star and after 50 green symbols even with a shooting star. If the snake goes over the entire screen you will see the last 5 minutes. The SCR events (Skin Conductance Responses) also contribute to the calculation of the color of the hands.

27. Survey (optional)

If you have toggled this option on in the settings, a survey will appear after each measurement. This enables you to archive reproducible measurements and to document changes in your measurements (for instance, if you change the electrodes type or if you start to use the eSense while you are lying down instead of sitting).

What is your position?
Choose between sitting, legged/yoga sitting, standing or laid.

Electrode type
The first image represents the gel electrodes, the second image represents the Velcro electrodes, and the third image represents the EDA finger clips.

How do you feel?
Here you set your mood after the session. This enables you to save your mood in connection with the measurements for the long term.

Note (here “Test tone and tactile”)
Here you can simply note a free text to the measurement. We suggest noting down special circumstances so that you can classify measurements with a lot of stress or relaxation even much later in time.

28. Pie charts (after a measurement)

After the measurement (and optional survey), in the landscape mode, a survey appears with two pie charts: one shows your SCR while your measurement and another shows the time proportions of rising, falling or steady values (see screenshot).

Here you can also swipe the screen to the left or right to change between the pie chart and the graph of your measurement.

29. Procedure Overview

Edit or delete procedure

To edit a procedure, simply swipe it to the left in the overview.

You can then tap the blue pen-symbol to edit the module.

If you want to copy the procedure, tap on the green copy-symbol. By touching the red trash symbol, you can delete the module.

30. Procedure editor

Procedure name
Here you can name your procedure with a suitable name (in this example, it is simply “test”).

Password (optional)
If you wish, you can protect your procedure with a password.

Decimal separator
You can choose between point or comma as separator of values in CSV export of procedures.

Survey after recording
Here you can activate/deactivate the survey (position, mood, notes) after each measurement.

31. Add new module

In the procedure editor, select the “Modules” tab.

Add module to procedure
Click on this button to add another module.

Edit module
Move the module to the left and tap the blue pencil icon to name the module.
To edit a module, tap the gray pencil icon.
To delete a module, tap the red recycle bin icon.
To duplicate a module within the procedure, click on the yellow sharing icon.
To duplicate a module in another procedure, click on the black sharing icon and select the procedure from the following pop-up.

Module Type
You can choose between a text, a fixation cross, an image, a video, an audio file, an arrow, a bar graph, a smart bulb, an oscilloscope, a breath pacer or the biofeedback snake.

Module duration
Set how long the module shall last. To do this, simply move the slider to the left or right.

module color
Determine the color of the module in the procedure editor.

32. Overview of the modules

**Text module**
This module shows a text which you can edit.

**Picture module**
The picture module shows either a standard picture from the app or a picture from your gallery.

**Video module**
In the video module, you can choose either the standard video from the app or use your own video.

**Fixation cross module**
The cross changes its color depending on the conductance and provides direct biofeedback.

**Audio module**
The audio module is playing a relaxing song. You can choose your own music.

**Arrow module**
The arrow changes depending on relaxation and gives you direct biofeedback.

**Bar graph module**
The bar graph shows you your current value and gives you direct biofeedback.

**Picture module in landscape format**
The procedures can be displayed also in landscape format.

Breath Pacer module in landscape format
The bar indicates the breathing rhythm. When the bar goes up, inhale. As the bar goes down, exhale. You can also set holding phases between inhaling and exhaling.

Osciloscope Type Breath curve (Sphere)
The circle leads the breathing rhythm. When he expands, inhale. When the blue circle contracts, breathe out. You can also set holding phases between inhaling and exhaling.

Osciloscope Type Both
This is a combination of the graph to the left and the breathing aid to the right \. You can see the measured values while following the breathing aid.

Biofeedback Snake The Biofeedback Snake is also available as module.

Procedure in the archive
The colored background represents the SRC per minute (green = relaxed state / little SCR, yellow = excited state / medium SCR)

33. Creation of a procedure

1. Tap on the plus icon to create a new procedure.

2. Give the procedure a name (here “Example Procedure”).
You can simply accept all other default settings for this example.

3. Select the upper tab “Module” and tap on the button “Add module”.

4. Select a bar graph module and tap the check mark. Here, too, you can accept the default settings.

5. Then add an Oscilloscope and breath pacer module Here, too, you can accept the default settings.

6. Your procedure should now look like this.

7. If you want to change something at a later date on one of the modules, you can swipe the corresponding module to the left and tap on the blue pencil symbol. Otherwise you can now tap the tick at the top right.

8. Start the procedure by tapping the play button. Have fun!

34. Meditations

You can also choose one of our guided meditations as a procedure. The breathing meditation is already included in the eSense app.

We will also offer more meditations shortly as new free cloud procedures for users with account. The meditations thus offer you an easy way to train your awareness and attention and, at the same time, receive biofeedback.

35. Own media (photos, videos and audios)

You can use your own pictures in the picture module, your own videos in the video module or your own music or melodies in the audio module in the procedures.

Android usually enables this without any further problems. As long as you allow the eSense app to access your files on your device, you can upload them to the eSense app.

iOS is a bit more restrictive. As usual, you can use your pictures from your device in the iCloud for pictures and videos.

For audio files you need iTunes (or an alternative such as “CopyTrans Manager”). This is where your music or melody must be. You can find your music in iTunes (or CopyTrans Manager) under the tab “My Sound” and insert it into your procedures.

We have a detailed video at https://www.youtube.com/watch?v=A_CRbmBeBBc where we show all the steps.

On iOS the power saving mode must also be deactivated, otherwise the videos in the procedures cannot be played.

36. Settings (Overview)

Feedback Direction
Select the direction in which you want the feedback to react to. It can respond either to an increase or decrease in the measured values.

Response time
The default setting is “Short”, which allows feedback to respond quickly to changes in readings. For longer measurements we recommend “Medium” or “Long”, then the reaction time will be slightly delayed and the eSense will no longer react to every small change of the measured values.

Music Feedback
If the value moves in the unwanted direction (e.g. lower values), the music will become quieter or change its speed depending on the type of feedback you choose.

Music Preview
Tab the play button to listen to the selected song.

Choose music
You can choose default or your own music.

Music feedback type
You can optionally choose between music start/stop, volume feedback or playback rate feedback. Note: For iOS are the Restricted options.

Tone Feedback
In the background, you can hear sounds from other apps.

Choose tone type
You can choose between single or continuous tones.

Tactile Feedback
Your device will vibrate to provide feedback. Only smartphones support this feature, tablets do not have a vibration motor.

Tactile feedback direction
Decide whether decreasing (“Decrease”) or increasing (“Increase”) tactile feedback values should be considered a success.

Smart bulb feedback
The light bulb changes its color depending on the values.

Choose a bulb
Choose between Magic Blue, Magic Blue V2 or Phillips Hue.Connection test
With this option, the bulb changes color if the connection is successful.

Breath Pacer
If activated, a breathing aid is displayed during the measurement.

Breath pacer type
You can choose between line and sphere.

Enable audio tone
Tones can also be added as auditory breathing aids.

Inhale time / exhale time
Select the seconds for each inhalation breath and exhalation breath to display the breathing aid.
Hold before inhale / exhale
Select the seconds between inhalation and exhalation breaths

background image
You can choose a background image for the breathing aid.

Inhale color / exhale color
Select the color for each inhalation and exhalation stroke of the bar or ball.

Video
Choice: In the dropdown menu, you can select from included videos and “Select your own video”. You can select your own videos from your device.

Video Feedback Type
Effects can be applied to the video as feedback. Sie können zwischen Start/Stop, Schärfe, Helligkeit und Sättigung wählen. You can choose between Start/Stop, Sharpness, Brightness and Saturation. In addition, the automatic or manual mode for selecting the upper and lower limits is then available for sharpness, brightness, and saturation. In between is then interpolated. “No feedback” is also possible, then the video is simply played.

General:

Session name
Enter the name of your session which will be displayed in the archive here.

Session time length
You can automatically time-limit normal measurements. They stop automatically after the set time.

Time length X-Axis
You can set the time displayed on the X-axis of the oscilloscope. We recommend 90 seconds.

Decimal separator
You can choose between comma or dot.

Survey after recording
Here you can activate/deactivate the survey (position, electrode type, mood, notes) after each measurement.

Markers
You can define markers by tapping the button. These are the markers you can set during a measurement. (See also ‘Set Marker’ in Landscape mode of the general view above).

Show tutorial
You can watch the tutorial again at any time from the first start of the app.

Chart settings
You can change the colors of the graph and the oscilloscope in the general view.

Chart axis color
You can change the color of the chart axis in the main view.

Chart line color
You can change the color of the chart line in the main view.

Oscilloscope background 1&2
You can change the background color of the oscilloscope in the main view.

Smoothing of oscilloscope curve
You can adjust the smoothing of the curve in the oscilloscope between 1 (hardly) and 10 (very strong).

Reset to standard colors
You can restore the default colors for the graph at any time.

Arrow raise / lower color
You can also disable the arrow in the main view.Show arrow
You can also disable the arrow in the main view.

Backup & Restore
You can export and import your procedures and measurements. More about this in our FAQ

Demo Mode
A saved measurement is played back automatically. A real sensor is not needed.

Real time streaming to eSense Web App
This allows you to stream the data live to the eSense Web App. More information in the Account and Cloud section.

37. In App Purchases

In-App Purchases
Additional to the option to use your own music or videos in the eSense App you can also purchase additional music or videos. We regularly extend the offer.

38. Archive (overview)

The app also contains an archive, in which you can save your measurements and export them as well. You can watch those in detail again, compare them to each other and export them individual or all together (as ZIP file).

Recordings
Here you can see your measurements listed. You can view a single measurement by tapping on it.

If you click on the clipboard symbol at the top right, you can mark one, several or all measurements. You can then export, analyze or delete the exported measurement (s).

On the filter symbol you can choose whether you want to sort the measurements by name, date, length in ascending or descending order.

If you want to delete a single measurement from this list, you can also tap on the trash can symbol to the right of the measurement.

Analyze
Here all measurements are listed according to the following factors:

Time, Average of Session µS, Minimum µS, Maximum µS, Difference Min/Max µS, Time Increase, Time Decrease, Total SCR, % of SCR of Session.

With this, you can recognize trends over time and over several measurements (if, for example, your % of SCR of Session decreases by regular training, you can see this here immediately).

39. Archive (individual view)

Export data

Thanks to our export functions at the bottom of a recording, you can export the recordings in PDF or .csv format with all common apps (e.g. send via Messenger, WhatsApp, e-mail, etc.) or simply save them on your phone or in your cloud.

The data are exported as a.csv-file (comma separated values). This format can be opened with Microsoft Excel or Open Office Calc (for free).

If you like to work with Google, Google Sheets can be an alternative to Excel for you. You can open your exported .csv-files, visualize and access them via the cloud easily from several devices. Google Sheets has almost the same functions and interface as Excel.

Note: We have also summarized more detailed information on CSV export and processing your data in an extra article on streaming and analyzing eSense data.

SRC
You can see the SRC of the measurement here as well. Both pie charts are the same as those that you see right after the measurement. You can find more information in the chapter about Skin Conductance Response (SCR) in this manual.

Parts of increase/decrease/steady

In the pie chart you can see the parts in which the measured values where increasing, decreasing or steady.

Export as PDF File

You can export the measurement also as PDF alternatively. Note: This takes a moment.

In Excel™ or Google Sheets™

Notice: If you open the .csv-file with Excel™ (or Google Sheets™) and your values make no sense, then there is usually a different set language in the eSense App and Excel™ and Sheets™.

Note: We have also summarized more detailed information on CSV export and processing your data in an extra article on streaming and analyzing eSense data.

**Exported data in Excel with SRC/min in the background (green bars)**

40. Marker feature

You can also set markers while you make measurements. For example, if you have a regular biofeedback exercise which involves breathing calmly at a specific point, you can set a marker in that moment when you breathe calmly. Later in the exported data, you can see the moment where you had breathed calmly. The marker feature comes in handy when you are making longer measurements with several actions.

The markers can be displayed well in Excel:

**Exported measurement in Excel with markers**

41. Virtual Reality (VR) (f.i. Meta Quest 3)

All our eSense sensors and our eSense app also work with VR (virtual reality) glasses. The prerequisite for this is a USB-C adapter (our recommendation: https://amzn.to/40eCoLR), which we now recommend anyway and which you can also order directly from us in the store with an eSense.

The eSense app can be used as normal, with all its functions. After the one-time setup with SideQuest, no further special adjustments need to be made.

In particular, the graph of the measurement as well as the photos and videos of the biofeedback training can be viewed in impressive detail with the VR glasses.

We have created a video that shows the best way to use it:

42. Compatible Android and iOS devices

General

Note for all eSense:
We recommend using a tablet instead of a smartphone due to the better display.

If you don’t have a device yet and/or want to buy an extra device for the eSense, we recommend depending on your taste either

a Nokia G10 (https://amzn.to/3dg9Qx5), a Nokia G21 (https://amzn.to/3Qso3Fv), a Motorola Moto E40 (https://amzn.to/3bBl0fg), a Samsung Galaxy A13 (https://amzn.to/3JuDE5x), a Samsung Galaxy A23 5G (https://amzn.to/3Z2NIIP) or a Xiaomi Redmi 10 (https://amzn.to/3TF2EvY) as a cheap entry-level device if you prefer Android

a used iPad in good condition (from bsw. https://www.refurbed.de/c/ipads/ or https://www.rebuy.de/kaufen/apple-tablets) if you prefer iOS.

According to our research, these options offer enough power for the eSense app, will remain upgradeable to the upcoming Android and iOS versions for some time, and are still reasonably priced. The Android devices also still have a normal 3.5mm jack input and do not require an adapter for the eSense.

Starting from the iPad 10th generation (2022), the iPad Pro 3rd generation (2018), the iPad Air 4th generation (2020), and the iPad mini 6th generation (2021), iPads no longer have a 3.5mm headphone jack. From these models onward, you will need an adapter for the eSense. More information can be found in the general notice below under iOS.

iOS devices compatible with the eSense

All iOS devices from version 15 or higher, which are (in excerpts):
Apple® iPhone® 6S, iPhone® SE/SE 2, iPhone® 7/7+, iPhone® 8/8+, iPhone® X, iPhone® XR, iPhone® XS, iPhone® 11/11 Pro, iPhone® 12/12 Pro, iPhone® 13/13 Pro, iPhone® 14/14 Pro, iPhone® 15/15 Pro
Apple® iPad® 5th generation or newer, including all iPad Mini from 4th generation and iPad Air from 2nd generation or newer
Apple® iPad® Pro from 1st generation or newer

General note:
Some newer iOS devices without the classic 3.5mm headphone jack, but with a Lightning or USB-C port, also work perfectly with the eSense. For this, you’ll need either the original Apple USB-C adapter (https://amzn.to/41zD2Gd) or the original Apple Lightning to 3.5mm adapter (https://www.mediamarkt.de/de/product/_apple-mmx62zm-a-2179668.html) – which is optionally included with the eSense.

Alternatively, you can use any other adapter with a DAC chip. We recommend this adapter on Amazon: https://amzn.to/2SnAUA1.

We tested 11 alternative Lightning adapters from third-party vendors – only two of them worked. Therefore, we recommend either the original Apple Lightning adapter (https://www.mediamarkt.de/de/product/_apple-mmx62zm-a-2179668.html) or this compatible Lightning-to-3.5mm adapter, which we have successfully used with the eSense and also offer in our shop: Compatible Apple Lightning to 3.5mm adapter https://mindfield-shop.com/en/product/compatible-apple-lightning-to-3-5mm-adapter.

Additional note Siri:
Please note that Siri must NOT be activated if you want to perform a measurement with the eSense (this applies to all eSense sensors). A running measurement can otherwise be disturbed and your measurement values falsified. You must disable Siri YOURSELF (our app cannot do this automatically due to Apple’s settings).
To disable Siri go to Settings -> (General ->) Siri and disable Siri (exact steps may vary depending on iOS version).

Note for iOS devices and the eSense Pulse:
Your iOS device must support Bluetooth® 4.0 LE (sometimes referred to as Bluetooth® Low Energy or BLE ), which is supported from iOS 5 and up.

Note for iOS 7 and later and the eSense Respiration, Skin Response, and Temperature:
The eSense works through the microphone input. For iOS 7 and above, you must explicitly allow the eSense app to use the microphone input, otherwise the eSense will not work. During the installation you will be asked for this, you have to answer there with “Yes” or “Allow”. After installation, you can set this manually. Allow access to the microphone input in the system settings of your iOS device under Settings -> Privacy -> Microphone

**Lightning to 3.5mm headphone jack adapter (is included with every Apple device,**
**which no longer has a 3.5mm headphone jack, e.g. the iPhone X)**

Android devices that are compatible with the eSense

All Android smartphones and tablets running Android 10.0 or later (Android Q)
If you plan to purchase a device specifically for use with the eSense, then we recommend a Nokia G10 (https://amzn.to/3dg9Qx5), a Nokia G21 (https://amzn.to/3Qso3Fv), a Motorola Moto E40 (https://amzn.to/3bBl0fg), a Samsung Galaxy A13 (https://amzn.to/3JuDE5x), a Samsung Galaxy A23 5G (https://amzn.to/3Z2NIIP) or a Xiaomi Redmi 10 (https://amzn.to/3TF2EvY) as an inexpensive entry-level device.

Important note about Android devices for the eSense Pulse:
Your Android device must support Bluetooth® 4.0 LE (sometimes called Bluetooth® Low Energy or BLE ), which is supported from Android version 4.3 (mid-2013). But we recommend Android version 4.4 and higher anyway. Therefore, the eSense Pulse generally works with most current Android devices.

Important note about Android devices for the eSense Respiration, Skin Response and Temperature:
Your Android device needs a 3.5 mm connector (standard headphones) for external headsets/microphones. On most devices this is present and often integrated with the headphone jack. If no such microphone input is present, such as on the Google Nexus 7, you cannot use the eSense! (All iOS devices listed above have the port).

Alternatively, you can use any other adapter with a DAC chip. We recommend this adapter on Amazon: https://amzn.to/2SnAUA1.

Below are some Android devices that we have tested with the eSense Pulse, Respiration, Skin Response and Temperature and which work fine (whitelist). (Please note that this is only a very small sample and that the vast majority of devices worldwide work with the Mindfield eSense).

Google Pixel 2 (Smartphone)
Samsung Galaxy A13 (https://amzn.to/3JuDE5x) (Smartphone, our recommendation)
Samsung Galaxy A23 5G (https://amzn.to/3Z2NIIP) (Smartphone, our recommendation)
Samsung Galaxy S21 (Smartphone)
Motorola Moto E40 (https://amzn.to/3bBl0fg) (Smartphone, our recommendation)
Nokia G10 (https://amzn.to/3dg9Qx5) (smartphone, our recommendation)
Nokia G21 (https://amzn.to/3Qso3Fv) (smartphone, our recommendation)
Xiaomi Redmi 10 (https://amzn.to/3TF2EvY) (smartphone, our recommendation)
Xiaomi Redmi Note 11s (smartphone)
Samsung Galaxy Tab S8 (tablet)
TECLAST M50 (https://amzn.to/464c0pr) (tablet, low price but needs the USB-C-to-3.5-mm jack adapter: https://amzn.to/2SnAUA1)

The following Android devices are NOT compatible with eSense Respiration, Skin Response and Temperature (blacklist). This list is not necessarily exhaustive. If you are not sure if your device is compatible, check if the microphone input is present as described above!

All tablets from Lenovo (For the eSense Skin Response, Temperature and Respiration. The microphone input distorts the signal from the eSense. With the eSense Pulse they work)
Samsung Galaxy A40 (Problems with the signal level of the eSense Skin Response and Temperature. Only the Respiration works. Pulse also works because it does not require a 3.5mm jack)

It is possible that these devices will work after all if you use the devices’ USB-C port instead. You can use a USB-C to 3.5 mm jack adapter for this purpose: https://amzn.to/2SnAUA1.

43. Adapter for Android and Apple devices

Some newer Android and iOS (Apple) devices without the classic 3.5mm headphone jack and with the newer Lightning / USB-C connector also work perfectly with the eSense.

Please follow this order when using the adapter:

Plug the adapter into your smartphone/tablet.
Connect the eSense to the adapter.
Start the eSense app.

If the adapter with eSense is only plugged in after the app is already running and in Free Training mode (even if no training has started yet), connection issues may occur.

If the eSense is not recognized and the signal fluctuates erratically, please close the eSense app completely and restart it. This should resolve the issue.

Apple

You either need an original Apple USB-C (https://amzn.to/41zD2Gd) or original Apple Lightning (https://www.mediamarkt.de/de/product/_apple-mmx62zm-a-2179668.html) to 3.5 mm connection adapter (not included in the scope of delivery of the eSense).

Android & Apple

Alternatively, you also can use any other adapter with a DAC chip. We recommend this adapter on Amazon: https://amzn.to/2SnAUA1

An adapter is also only needed, if at all, for the eSense Skin Response, eSense Temperature and eSense Respiration (as these eSenses have a 3.5mm headphone jack). An adapter is never needed for the eSense Pulse and eSense Muscle (as these connect to the device wirelessly via Bluetooth®).

Alternatively, you can use any other adapter with a DAC chip. We recommend this adapter on Amazon: https://amzn.to/2SnAUA1.

44. eSense Web App

In addition to the app, we have also developed an eSense web app that mirrors and supplements the app. You can use this with the account and plans mentioned above.

You can analyze your recorded data (with the basic plan) or even transfer your data to a PC in real time (live streaming with the premium plan).

The main advantage of this is that you can see the graph even better with a large screen and enlarge individual areas and have more advanced analyze features.

**eSense Web App with a live measurement with the eSense Pulse**

**eSense Web App with a live measurement with the eSense Muscle**

With the eSense Web App, you can also view measurements from several and different eSense simultaneously and in real time, which allows a professional trainer client to design the workflow.

You can find the web app at https://esense.live. There you can login with the same account (username and password) as for the eSense app. For more information on the eSense Web App and its capabilities, see also our article on streaming eSense data.

**Archive of the eSense Muscle in the eSense Web App**

The eSense app works with all our eSense except the eSense EEGenius.

45. Supervisor Guide

You must have activated a plan. You can book this in our mobile app (on Android and iOS), under Profile -> Plans.

For sharing your measurments with a supervisor as client, the Basic Plan is sufficient (because the measurements are already uploaded to the cloud, so your supervisor can access your uploaded measurements). We also have an overview of different trainer-client scenarios here: https://mindfield.de/esense-app-fur-den-professionellen-anwender/

For the live streaming and custom live view, the client needs to have the Premium plan activated.

Client side

Next you need to login to our Web App at https://esense.live/

In order to share your measurements with a supervisor you need to have the Basic plan activated (as described in the first step above)

In the web app, you must enter the ID of your supervisor (with whom you want to share your measurements). For data protection reasons, this is unfortunately only possible in this way. This means that your desired supervisor must provide you with the ID and you must enter it in the following place and thus allow the supervisor access:

(For privacy reasons, supervisor mediators are now shown with their initials only. The e-mail is no longer displayed, only the ID).

Trainer side

First you need to login to our Web App at https://esense.live/

You must be a registered Supervisor. You can buy the Supervisor Plan here:

In order to work with your client(s), the client(s) needs to

have the Basic plan
Be a supervisor yourself

If you want to use the live streaming together with clients, the clients also need a stable internet connection.

You can add clients by selecting them from the drop-down list. As the clients have previously explicitly granted you access, you should see your clients in the drop-down list.

Activate streaming to esense.live in the eSense mobile app

If you are a supervisor, you can activate real-time data transmission to eSense Web App (esense.live) in the eSense app settings.

Custom Live View (Live Streaming)

For the custom live view and live streaming, you need to have the Premium Plan activated (as described in the first step above).

Klick on “Charts” -> “Custom live view” in the menu. Select the client from the drop-down menu, select the Sensor at “Type” and click on “Add custom Chart”.

Custom live view with 1 client and 2 sensors

You can do this with several different sensors from the same user as well as see the measurements from several users at the same time.

You could for example stream the Skin Response and Pulse from one client when the client does a combined measurement with the Skin Response and Pulse.

But you also could have 2 or more clients all using an eSense Pulse at the same time and stream them next to each other (f.i. in a group session that you do online with several clients in different places)

46. Account and Cloud

You can register your own, free account for the eSense app and book plans. You can also benefit from free, regularly added procedures without booking a plan. Thus, we recommend using the app with an account. With the plans you can mainly use the cloud and its functions and get also access to the eSense web app at https://esense.live.

With the Basic Plan, you can save your measurements locally and online in the cloud and thus access your measurements from all devices and from anywhere. You also get access to the eSense web app.

The Premium Plan includes all functions of the Basis Plan. In addition to your measurements, you can also save your custom procedures online in the cloud and thus access your procedures from all devices. (Attention: Technical limitations from Apple unfortunately do not allow the upload (and thus the synchronization) of audio files. The synchronization of picture and video files is possible, however). You can buy the Premium Plan here: https://mindfield-shop.com/en/product/premium-plan-for-esense-app-for-all-esense-sensors-annually/

There is also the Supervisor Plan. As a professional or commercial biofeedback trainer, you can use it to create individual procedures for your clients and share them with them via the cloud. You can buy the Supervisor Plan here: https://mindfield-shop.com/en/product/esense-supervisor-account-monthly-subscription-for-esense-app-and-esense-live

You can also share your measurements with other users. You also have the option of transferring your data to the eSense web app in real time. To do this, activate “Real-time data transfer to eSense Web App” at the bottom of the settings.

These plans can be used, among other things, to design a trainer’s client’s workflow. You can find an overview of the account and the cloud in our account comparison article.

You can book the plans in our app in the profile tab:

47. Account Comparison

Note: Scroll the table left or right on mobile devices

ACCOUNT TYPE:	SUPERVISOR	PREMIUM PLAN	BASIS PLAN	WITHOUT PLAN
Download of a procedure from the cloud	✅	✅	✅	✅
Upload of a procedure to the cloud	✅	✅ ₁₎	❌	❌
Upload of a measurement to the cloud	✅	✅	✅	❌
Upload of a procedure (as record) to the cloud	✅	✅	✅	❌
Sharing of a procedure (over the cloud)	✅₂₎	❌	❌	❌
Sharing of a procedure (as record)	✅ ₃₎	✅ ₃₎	❌	❌
Sharing of a measurement (as record)	✅ ₃₎	✅ ₃₎	❌	❌
Join a group	✅	✅	✅	✅
Create a group	✅	❌	❌	❌
Add other users to a group	✅	❌	❌	❌
Stream data to the eSense dashboard	✅	✅	❌	❌

1) Sharing with other users or groups not possible
2) Sharing with other users or groups possible
3) Sharing with other users possible

Example cases for the different accounts

SUPERVISOR

The professional or commercial biofeedback trainer has a SUPERVISOR account so that he can create individual procedures for his clients and share them with them via the cloud. They can also create different groups and add their clients to them individually. This allows them to monitor and analyze their clients’ measurements over a longer period of time.

You can buy the Supervisor Plan here: https://mindfield-shop.com/en/product/esense-supervisor-account-monthly-subscription-for-esense-app-and-esense-live/

PREMIUM PLAN

The client who wants to work with a (professional) trainer and have access to all functions has a PREMIUM PLAN. This allows the client to share their recordings (both free measurements and procedures) with the trainer and other users. They can also upload their own procedures to the cloud and have them analyzed or adapted by the SUPERVISOR (trainer).

BASIS PLAN

The client who wants to work with a (professional) trainer needs at least this account so that he can share his recordings with the trainer (SUPERVISOR).

WITHOUT PLAN

Anyone who simply wants to get a taste of the app does not need to join a plan to test its functionality.

Example cases for the synchronization of measurements between accounts with different plans

Without account, without plan (and offline)

All measurements are saved locally on the device. There is no synchronization with the cloud as there is no associated account.

Users can only access their measurements on the device on which they were carried out. You can find the measurements in the archive under the Recordings tab.

With account, without plan

The measurements are linked to the user’s account but are not synchronized with the cloud. All measurements that are linked to the user’s account are displayed in the archive.

The measurements can only be accessed if the user is logged into the account on the device on which the measurements were taken. You can find the measurements in the archive under the Recordings tab.

With account, with basic or premium plan

All measurements are linked to the user’s account and are synchronized with the cloud.

All synchronized measurements that are linked to the user’s account are displayed in the archive. To synchronize old measurements that were created on the device before a plan was purchased with the cloud, you can select the “Synchronize with the cloud” button in the “Local session, performed without account” tab in the archive. These measurements are then assigned to the other measurements and disappear from this tab.

Activate streaming to esense.live in the eSense mobile app

If you are a supervisor, you can activate real-time data transmission to eSense Web App (esense.live) in the eSense app settings.

48. Groups

The accounts enable you to create your own groups or to join other groups. This allows you to share your recordings with your friends. Or you can work with a trainer as a client since you can share your recordings with the trainer.

Create a group

Tap on the plus symbol to create a group.

Edit a group

Tap on the 3 dots next to the group name You can then (if authorized) view and remove the members of the group or add new members.
You can also change the title of the group or delete the group.

49. Privacy policy

The eSense App does not collect any personal data, such as name, gender, date of birth, etc.. Each recording of measurement data is done under a general prefix such as “measurement”,

supplemented by with the eSense sensor used, the current date and time of the measurement. The recorded measurement data cannot therefore be assigned to any person.

The prefix of a recording, e.g. “measurement”, can be changed by the user in the settings and used for the assignment to a person. Users can decide whether to change this prefix to their name, for example. Then each measurement and also each CSV file exported from it contains the name of the user in the file name.

Access rights within the eSense App

Microphone input: Access to the microphone input is required to receive measurement data from the eSense sensor at all. This access is mandatory.

Access to media library: Access to photos, music, and videos is only required if you want to use your own photos, music, and/or videos in the eSense App. The eSense app should be used as feedback. It is also possible to use only the by the app supplied media.

Access to the location: The access to the location (activation of GPS) is only required for the Bluetooth® connection to the Magic Blue bulb (optionally available) or the eSense Pulse. This is mandatory under Android and lies outside the possibilities of the publisher of the eSense App. No standard data is collected, the standard function is not used.

Access to Bluetooth®: If the eSense app is used with the Magic Blue smart bulb to provide biofeedback by modifying the color and brightness of the light bulb, it needs to be connected via Bluetooth® within the app. To do this, the Bluetooth® function is used. For the eSense Pulse Sensor, Bluetooth® is also required as it transmits the data via Bluetooth®.

Transmission of anonymous usage data and crash reports

In order to improve the technical stability of the eSense App and the detection of code errors, we use the Sentry service. Sentry serves these purposes alone and does not evaluate any data for advertising purposes. The transmission takes place anonymously and only with an existing internet connection.

Processed data

Usage data, metadata (device ID, device data, IP address).

Special protective measures: IP masking, immediate deletion.

External Functional Software Disclosure: Functional Software Inc., Sentry, 132 Hawthorne Street, San Francisco, California 94107, USA.

Processing in third countries: USA

Warranty for processing in third countries: Privacy Shield, https://www.privacyshield.gov/participant?id=a2zt0000000TNDzAAO&status=Active.

Deletion of the data: Information on the device or time of error is collected anonymously and is not used for personal purposes and then deleted.

Medical information

The Mindfield eSense sensors are not medical devices and may therefore only be used to reduce stress.

If you suffer from an illness, do not carry out any treatment on your own and always consult a therapist.

Warranty by the manufacturer The statutory warranty obligations apply to all our products. If you have any problems with our products, please contact us directly. See the “Contact” section of this manual.

eSense Skin Response Manual

© Mindfield Biosystems Ltd. 2025 | www.mindfield.de

Contents

General

Skin Conductance

Biofeedback Training

Electrodes & Accessories

eSense App (Android / iOS)

eSense Web App (www.esense.live)

Account & Cloud (optional)

1. News

2. Delivery contents Skin Response

Delivery contents eSense Skin Response

Delivery Contents eSense Skin Response Bundle

Notes

3. Technical Data

4. Combination possibilities eSense sensors & Combined Feedback

eSense Pulse

5. Analysis of eSense data (CSV)

Exporting measured values from the Mindfield eSense app

General Note

Microsoft Excel™

Google Drive (Google Sheets™, recommended)

6. Streaming eSense data to a PC/Mac/Browser (eSense Web App, OSC)

eSense Web App

OSC Transfer

7. Duplicate eSense on a large screen (screen mirroring)

Android

Wireless with HDMI dongles (Miracast / Chromecast etc.)

iOS

Wireless with Airplay

Mini projector

8. EC Declaration of Conformity

9. Contact

10. General information about skin conductance

11. Skin response and biofeedback training

12. Skin Conductance Response (SCR)

The 4 Steps in detail

13. Preparation and start of the app

Fixation of the Velcro-electrodes

14. Procedures

15. Open Training

Preparation and start

First stage (observe and experiment; determine your initial status)

Second stage (targeted Biofeedback training with the skin response)

Third stage (deliberate provocation, relaxation and stress coping)

Fourth stage (transfer; relaxation without feedback)

16. Electrode types

Velcro electrodes

Finger clips (without gel)

Gel electrodes (disposable)

17. Possible electrode positions

Velcro electrodes

Gel electrodes

Finger clips (without gel)

18. Extending the cord of the eSense

19. Smart Bulbs (optional)

Magic Blue

Philips Hue

20. Philips™ Hue™ FAQ

Which products from Philips Hue can I use with the eSense app?

How do I connect to the Philips Hue within the eSense App?

How do I connect the Philips Hue within the Hue App?

How many Philips Hue bulbs/products can I use with the eSense app?

How far can the Philips Hue, the Hue Bridge and the smartphone or tablet be away?

Where can I buy the Philips Hue products?

21. Magic Blue FAQ

I can no longer find the Magic Blue in the Mindfield Shop.

How do I connect to the Magic Blue?

What can I do, if connecting to Bluetooth® fails or the Magic Blue is not found?

Why can’t I find the device when scanning for Bluetooth® devices?

How many Magic Blue bulbs can I control at the same time?

How far can the distance between Magic Blue and phone or tablet be?

How can I reset the Magic Blue?

22. Functions of the Mindfield eSense App

23. General notes

24. General view & Open Training

Portrait

Landscape

25. Breath Pacer (optional)