2 GSR was used for a variety of research in the 1960s and 1970s, with a decline in use as more sophisticated techniques (such as EEG and MRI) replaced it in many areas of psychological research. Reich studied GSR at the Psychological Institute at the University of Oslo in 1935, and confirmed the existence of a bio-electrical charge behind his concept of vegetative pleasurable streaming. The scientific study of GSR began in the early 1900s. The first device used to measure the electrical conductance between two electrodes, was essentially a type of ohmmeter. Thus, skin conductance has been used as an indication of psychological or physiological arousal.
1 The sweat glands are controlled by the post sympathetic cholinergic system. Galvanic skin response (GRS) is a method of measuring the electrical conductance of the skin related to the sweat gland responses.
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