From introduction: "The electrodermal activity (EDA) refers to all exosomatic and endosomatic changes in electrical properties of the skin (Krapohl & Sturn, 2002). There is ample empirical evidence that electrodermal phenomena are generated by sweat gland activity in conjunction with epidermal membrane processe (Boucsein, 2012). Generally, under control of sympathetic nervous system, EDA is regarded as a valid indicator of emotional, motivational, and cognitive states. EDA is divided into tonic (EDL = electrodermal level) and phasic (EDR = electrodermal response or reaction) phenomena (Boucsein, 2012) "(...)