True about Galvanic Skin Response:

A, B, C i.e. Indicator of thermal sweating, T by sweating because of sweat has electrolytes, Fall is associated with yogic practiceGalvanic skin response (electrodermal response = EDR, skin conductance response = SCR, psychogalvanic response = PGR) is a measure of electrical resistance of skin as a reflection of changes in emotional or autonomic activity. It appears as an increase in electrical conductance (i.e. decrease in resistance) of skin, measured by attaching electrodes to skin and recording changes in associated moment to moment perspiration & autonomic activity. Emotional arousal like fear, anger, sexual feeling, stale response, orienting response, stress, anxiety & knowingly stating a falsehood (lie) and sympathetic activity as by pinprick or threat of injury produce sweating and increased electrical conductance of skin 1/t a similar T GSR response. It increases to a maximum after 2 to 10 seconds after stimulation and subsides at about the same rate.It is used in lie detection,behaviour therapy and hypnosis to indicate that client is experiencing emotional arousal. GSR is decreased during relaxed states like during yogaQ.