Measuring the amount of electricity that passes between two electrodes that are placed on the palm of one hand of an individual determines:

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Measuring the amount of electricity that passes between two electrodes placed on the palm of an individual's hand is called electrodermal activity (EDA). EDA is used to measure the activity of the sweat glands, which are controlled by the sympathetic nervous system. EDA is a useful measure of emotional arousal, stress, and anxiety. It can be used to study the autonomic nervous system and can be an indicator of psychological and physiological arousal responses.

Measuring the Amount of Electricity That Passes Between Two Electrodes