GSR/SC Velcro

GSR/SC Velcro

Mind Media

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GSR/SC Velcro

Reusable electrodes for measuring galvanic skin response (GSR), electrodermal response (EDR) or skin conductance (SC). Silver/Silver Chloride pellets are embedded into velcro straps.

  • Ag/AgCl silver/silver chloride with velcro straps
  • Packed per 2

The electrical activity of skin (EAS) formerly named galvanic skin response (GSR). In fact, the GSR is a bioelectric reaction, which is an indication of the activity of the autonomic nervous system (ANS). The process of sweating is meant for thermoregulation of the body and appears when you change the level of psycho-emotional stress. Due to the fact that the ANS activity cannot be consciously corrected, EAS sensor indications refer to a high level of reliability.

Design features of GSR sensor:

  • EAS is registered from the skin surface by bipolar non-polarizing electrodes via the "GSR" sensor (marked "K" or "GSR").
  • The fere method is applied with the application of external current (exosomatic method), indicators of which are considered to be skin conductance (SC) and skin resistance (SR).
  • Current measuring circuit - 2 microamps.
  • Operating measurement ranges from 2 to 1500 kOhm.
  • The sensor contains two reusable electrodes for placement on various phalanxes of fingers.
  • Electrodes can be placed on the palmar surface, for which the sensor is additionally equipped with two-sided Velcroes - Velcro-type extensions of 25 centimetres in length.

The Skin Conductance Sensor measures sweat gland activity on the hand which is closely correlated with sympathetic nervous system activity arousal and stress. This variable can be used for several biofeedback applications and is called SC (Skin Conductance) SCA (Skin Conductance Activity) EDA (Electrodermal Activity) or GSR (Galvanic Skin Response).

Skin conductance (SC) is expressed in micro-siemens or micro-mho and increases when the arousal level increases. During relaxation, the SC level normally decreases. The Skin Conductance sensor has been designed to measure minuscule (1/1000 micro-siemens) relative changes in skin conductance.

The NeXus GSR sensor requires Ag-AgCL electrodes (which are included) that snap into the two connectors. The electrodes are usually attached to two fingers or two sites on the palm. The electrodes are secured by velcro straps. Make sure they are not fastened too tight since that will impair blood flow. It does not matter which electrodes are placed on which finger as polarity is not important.

Skin conductance (SC) is expressed in micro-siemens or micro-mho and increases when the arousal level increases. During relaxation, the SC level normally decreases. The Skin Conductance Sensor has been designed to measure very small (1/1000 micro-siemens) relative changes in skin conductance.

Skin Conductance Electrodes are included:

  • These Ag-AgCL electrodes snap into the two connectors. and are usually attached to two fingers or two sites on the palm.
  • The electrodes are secured by velcro straps. Make sure they are not fastened too tight since that will impair blood flow.
  • It does not matter which electrode is placed on which finger as polarity is not important.
  • We recommend replacing the Velcro Finger Electrodes after around 100 times.

Use the Temperature Sensor in combination with the Skin Conductance Sensor in order to monitor both temperature and sweat gland activity on the hand.


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