Galvanic Skin Response


Human skin offers resistance to electric current just like a resistor do in an electronic circuit. This transient change in the electrical conductivity of the skin followed by an arousal or oriented response is referred to as Galvanic skin response or GSR.

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Galvanic Skin Response


Human skin offers resistance to electric current just like a resistor do in an electronic circuit. This transient change in the electrical conductivity of the skin followed by an arousal or oriented response is referred to as Galvanic skin response or GSR. In a fully relaxed person, the skin offers very high resistance and the skin’s surface is around 40mV with respect to the inner tissue. Sweating in the high emotional state or stress causes increased blood flow to the skin and reduces the skin resistance and increases its electrical conductivity. This phenomenon is widely used in Medical and Forensic sciences to assess the mental state of a person.

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