EMG biofeedback - training of the muscles - at home or under instructions with your mobile device, tablet or computer

Use the eSense Muscle for:

☑ Training of your muscles

☑ Strengthening of your muscles

☑ Relaxation of typical stress muscles (forehead, jaw, shoulder, neck)

☑ Reduction of muscle tension

☑ Coordination exercises

☑ Muscle building

Biofeedback muscle training from home with your iPhone,iPad, android device or computer

Scope of delivery of the eSense Muscle:

- Mindfield® eSense Muscle Sensor incl. 1600mAh lithium polymer battery for approx. 12 hours of continuous operation

- Electrode cable set for connecting up to 5 electrodes

- USB-C charging cable and charger

- Bluetooth dongle for Windows, if your PC does not have Bluetooth (please refer to the enclosed instructions)

- 50 pieces of EMG surface electrodes

- 50 pieces of alcohol swabs for cleaning the skin

- eSense Muscle Web App from Mindfield, available at www.esense-muscle.com

- Detailed instructions for effective biofeedback training.


Quick User Guide

  • Take the electrode cable set from the package. Five electrode cables are included. In black, white, yellow, red and green.
  • The yellow electrode cable is the ground / earthing electrode.
  • For a 1-channel measurement, please use the electrodes black (channel 1+), white (channel 1-) and yellow (grounding).
  • For a 2-channel measurement, please use the electrodes black (channel 1+), white (channel 1-), yellow (grounding), red (channel 2+) and green (channel 2-).

  • Two examples for a 1-channel measurement:
  • An example of a 2-channel measurement:

  • Clean the skin areas where you want to place the electrodes with the enclosed alcohol swabs or isopropyl alcohol.
  • Take the appropriate number of EMG surface electrodes from the enclosed package. Clip the electrodes to the cable ends before placing them on cleansed skin.
  • Remove the protective film from the electrodes and stick them to the cleaned skin. If you have not already done so, plug the electrode cables into the matching colored sockets on the eSense Muscle.
  • Now the eSense Muscle is ready for use and connected to the eSense (web) app.

App Demo Video

Training with the eSense Muscle

General information on EMG (electromyography) biofeedback training


  The musculature of the human being plays an essential role in the body. Our muscles are the largest energy consumer and are responsible for about 70- 80% of our body weight. Muscle activity is manifested along the fibers of a striated muscle in the form of permanent, electrical potential shifts. This electrical activity can be measured at the skin surface in the form of more considerable summation potentials. This form of measurement is called (surface) electromyography, and the result is an electromyogram.
The eSense Muscle can measure and train electromyographic muscle activity and transmit it to your mobile device, tablet or computer via Bluetooth.
Transverse striated muscles are controlled by our somatic nervous system and are subject to voluntary control. Every volitional action of a muscle can therefore be observed in an electromyogram. Thus, the tension of a muscle on 27 which surface EMG electrodes are placed immediately leads to increased trace in the EMG signal.

However, involuntary reactions, such as stress, inner tension, and emotional experience, can also be measured as (tonic) activity in the EMG. EMG biofeedback can also report back the general psychophysiological tension.

The interplay between the autonomic and somatic nervous systems can be depicted particularly well in the EMG. Increased muscle tone is mainly based on an increase in sympathetic activity. A decrease can be attributed to more robust parasympathetic activation.


Pictures of the eSense Web App

videogame biofeedback game example screenshot
game biofeedback on iPhone
muscle biofeedback on smartphone overview web app
game biofeedback on iPhone games
biofeedback muscle training on smartphone game
playfully  practicing biofeedback muscle training on smartphone

Mindfield eSense Web App for Windows, Mac and Linux

  • The eSense Muscle is being delivered with new software for the first time, a web app that runs exclusively in a browser
  • You don't need to install any software. All you need is: A PC / notebook with Windows 10, Mac or Linux
  • A functioning Bluetooth connection on this PC / notebook, Bluetooth must therefore be available and usable
  • A browser that supports "Web Bluetooth" so that you can connect to our eSense Muscle via Bluetooth. As of April 2021, these are Google Chrome, Microsoft Edge and Opera.>NOT SUPPORTED are explicitly Mozilla Firefox and Apple's Safari.
  • So if you have a computer with Bluetooth and one of the browsers mentioned, please go to the website: www.esense-muscle.com

Short version of an EMG biofeedback training


To reduce stress and its vegetative symptoms, an EMG biofeedback training can be performed by causing a reducing the muscle tone of certain "stress muscles" is aimed at. Typical stress muscles are the muscles of the forehead (M.Frontali), the jaw muscles (M.Masseter) and the shoulder muscles (M. Trapezius). Possible derivation positions for this are:

Through exercises that involve targeted tensing and relaxing (similar to the progressive muscle relaxation) these muscles can be lowered in their basic tone and thus reduce stress. For muscle building and strengthening individual muscles or muscle groups, a variety of possible derivations can be used. The electrodes of a channel are placed closer to each other, the more precisely the underlying muscle is recorded. With increasing distance you reach the activity of larger muscle groups. During training you, then muscle tone increase maximum values and improve endurance. For this purpose, tension phases with

progressive training being prolonged and increased. Pay attention however also make sure to always incorporate sufficient rest phases. For coordination exercises and targeted separation of muscle groups (e.g. lifting the arm without "pulling up" the shoulder), channel 1 and channel 2 can be cleverly combined. For example, channel 1 can be applied to the muscle that is to be tensed, while channel 2 can be applied to an adjacent muscle. Muscle to be tensed, while channel 2 "monitors" an adjacent muscle so that is not tensed during the movement. Each muscle movement generates a characteristic pattern under an EMG measurement, which is pattern, which can be practiced and repeated in the software. The possibilities of using EMG biofeedback are very diverse. Let a professional user assist you in this regard if you have any questions.

Important: If you are suffering from a medical condition, do not perform a treatment on your own and always consult a therapist. The eSense Muscle is not a medical device and may be used exclusively for stress reduction, muscle building, relaxation of tension and for coordination exercises to be used.

Designed in Germany

The eSense is completely designed at Mindfield in Germany.

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