Electrodermal Activity : is a term used to describe changes in the skin's ability to conduct electricity. It is a useful, fast, cheap, well established (since 1880's), low-tech and relatively non-invasive psychophysiological measure, which can be used to study many issues including: cognition, affect and individual differences.
It can also be used in ambulatory studies. There are also many dependent measures that may be observed within EDA and these different aspects of the EDA appear to reflect different kinds of cognitive or affective response. For EDA a measurement is taken of the function of the eccrine sweat glands.
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