The Mindfield eSense Skin Response is a small sensor to measure your skin conductance using the microphone input of your smartphone or tablet (Android or Apple iOS).
Skin response, also known as galvanic skin response (GSR), electrodermal response (EDR) or skin conductance (SC) is a method for measuring the skin's electrical conductance, which varies with its moisture level. Conductance is measured in µSiemens (µS) and is the inverse of electrical resistance.
The eSense Skin Response measures skin conductance between two Velcro electrodes attached to the index- and middle fingers. Active measurement involves applying a very low, unnoticeable voltage to the fingers.
In a professional, therapeutic context, skin conductance training is the preferred biofeedback training method for anxiety, panic and learning relaxation.
The sweat glands are controlled by the vegetative (sympathetic) nervous system and react directly to the smallest emotional, physical or mental changes. A rise in skin conductance is clearly visible under the influence of stress. Stress factors may be, for example, mental activity, emotional arousal, deep inhalation or frightening.
Even the smallest changes are made visible with the aid of the app, and can be used for biofeedback training to reduce stress.
A detailed introduction is included in the free app.
The eSense comes with the eSense app which you can load for free in the in the Google Play Store (Android), in the Apple App Store (iOS) or the Amazon Appstore. The app contains a variety of functions for an effective biofeedback training in a modern design. Essential function are the display of the measured values app as bargraph and oscilloscope, a feedback by video, music, tones, vibration and new: by light via a bluetooth smart bulb.
A Procedure consists of several assembled modules. A module can be for example a picture, a video, some music, a bargraph, an arrow or others. You can assemble the modules in any length to a fixed procedure. Some contain biofeedback-functions (that means they reflect the changes in your measured values from the eSense), some don't. With this feature you can build the perfect individual relaxation guide, a stress test, a predefined biofeedback training or use it for your own research. There are many possibilities. During a procedure, your skin response, respectively or temperature (depending on the eSense sensor you have) will be recorded. Afterwards you see your results for each module and in total and you can export those to Excel for further analysis.
The Magic Blue is a smart bulb which can be controlled via Bluetooth. The color as well as the brightness can be adjusted. This enables you to use the light from the bulb as an indicator of your level of stress or relaxation in combination with the eSense Skin Response or eSense Temperature.
From within the eSense App, you can connect to the Magic Blue and use it in your biofeedback session. Depending on the state of your relaxation, the bulb can show different colors or a different brightness or a combination of both.
You can purchase the Magic Blue here: https://mindfield-shop.com/en/magic-blue-led-esense.html.
We have two older apps for older devices. You can find those at https://www.mindfield.de/en/Biofeedback/eSense-App.html
If you plan on purchasing a device for using the eSense, we suggest the Amazon Fire 7 as an affordable tablet.
Mindfield® eSense Skin Response Sensor
2 velcro electrodes
Free app from Mindfield via the App Store or Googly Play.
Extensive instructions for effective training.
Sampling frequency freely selectable between 1 - 10 Hz (1 - 10 measured values per second)
1 - 10 measured values per second (freely selectable) are stored for exporting the data and can be shared from the app (for example via e-mail, Dropbox or Google Drive) as Excel compatible CSV file
Resolution: 18bit, rounded to 2 digits after the decimal point. Not rounded for export to CS
Apple, iPhone, iPad, iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. | IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under licence.
Attention: Never use the eSense Skin Response while you charge your iOS/Android device!
The eSense Skin Response does not need any batteries and is your iOS/Android device.