Electrodermal Activity

Arousal output is an inverted U-shaped function of arousal input (Figure 3). That is, the effect of arousal input on mental performance and such physiological indicators as electrodermal activity (EDA) initially rises. With further arousal input from trait and state sources, it asymptotes, then decreases as arousal input increases. 

Davidson, R. and Smith, B., Caffeine and novelty Effects on electrodermal activity and performance. Physiol Behav 49, 1169-1175, 1991. 

Roman, F., Garcia-Sanchez, F., Martinez-Selva, J., Gomez-Amor, J. and Carrillo, E., Sex differences and bilateral electrodermal activity. PavlJ Biol Science 24, ISO-155, 1989. 

Smith, B. D., Rockwell-Tischer, S., Davidson, R., Extraversion and arousal Effects of attentional conditions on electrodermal activity. Personality and Individual Differences 7, 293-303, 1986. 

Smith, B., Davidosn, R., Smith, D., Goldstein, H. and Perlstein, W., Sensation seeking and arousal Effects of strong stimulation on electrodermal activation and memory task performance. Personality and Individual Differences 6, 671-679, 1989. 

Davidson, R., Fedio, P., Smith, B., Aurielle, E. and Martin, A., Lateralized mediation of arousal and habiuation Diffeential bilateral electrodermal activity in unilateral temporal lobectomy patients. Neuropschologia 30, 1053-1063, 1992. 

Smith, B., Wilson, R. and Davidson, R., Electrodermal activity and extraversion Caffeine, preparatory signal and stimulus intensity effects. Personality and Individual Differences 5, 59-65, 1984. 

Monti-Block et al. (1994) [268] found that the adult human VNO is a functional chemosensory organ with a sexually dimorphic specificity to patented chemical stimuli called "vomeropherins" which seem to fit the definition of pheromones. The adult human VNO also appears to have the ability to transduce social-environmental chemical signals, which modulate certain autonomic functions (e.g., electrodermal activity and body temperature). 

Other evidence corroborates these data, and confirms that vomeropherin stimulation of the VNO can affect autonomic functions [249e]. This study also tested various chemicals to show that they depolarized the VNO and only the VNO. It also found that such stimulation of the VNO eould alter such autonomic variables as cardiac frequency, respiratory frequency, and electrodermal activity, and supports the idea that vomeropherins can alter the ratio of alpha to beta brain waves in the cortex. 

Electrodermal activity Woven electrodes Skin electrical conductivity Fingertips... 

Kappeler-Setz, C., Schumm, J., Kusserow, M., Amrich, B., Troster, G., 2010. Towards longterm monitoring of electrodermal activity in daily life. Ubiquitous Computing. 

Poh, M.Z., Swenson, N.C., Picard, R.W., 2010. A wearable sensor for unobtmsive, long- term assessment of electrodermal activity. IEEE Transactions of Biomedical Engineering 57 (5), 1243-1252. 

A three-arousal model for engineering psychophysiology. CNV = contingent negative variation EEG = electroencephalogram EDA = electrodermal activity ERP = event-related potentials HR = heart rate HRV = heart rate variability. 

Compared to other biosignals taken from the skin, electrodermal activity (EDA) can be r arded as the most convenient measure for workload. Phasic EDA is measured as skin conductance response (SCR) or skin resistance response (SRR). SCR amplitudes may reflect the amount of affective or emotional arousal elicited by a stimulus or situation (see Fig. 1.1). Both amplitude and recovery of an EDR have been demonstrated to be sensitive for certain aspects of central information processing (Boucsein, 1992), and may be used in a manner similar to ERPs as indicators of mental strain. The frequency of spontaneous electrodermal changes (called... 

Boucsein, W. (1992). Electrodermal activity. New York Plenum Press. 

Fowles, D. C. (1980). The three arousal model Implications of Gray s two-factor learning theory for heart rate, electrodermal activity, and psychopathy. Psychophysiology, 17, 87-104. 

Grimnes S, Jabbari A, Martinsen 0G, Tronstad C. 2011. Electrodermal activity by DC potential and AC conductance measured simultaneously at the same skin site. Skin Res Technol 17,26-34. 

W. Boucsein, Electrodermal Activity, 2nd edn. (Springer Publishing, New York, 2012)... 

For electrodermal activity (Chapter 10.3), a contact wet gel must have a low salt content to assure rapid emptying of the ducts. 

PU electrode situated on an inactive skin site. The other electrode is then situated on an active skin site. This constitutes a monopolar system. If both electrodes are situated on an active skin site, no signal (potential difference) is measured. Function is independent of surface area (as are all PU electrodes), but small electrodes pick up more noise. Not CC, current density J = 0. Indifferent electrode shall be situated far from bioelectric sources. Examples ECG right leg, other extremities, Wilson terminal. EEG ear flip, nose. Electrodermal activity elbow. 

EEG needed the highest sensitivity, speed was less demanding. ECG needed quick response times. Electrodermal activity galvanometers were not so critical of either speed or sensitivity (Figure 11.1). 

Venables, P.H., Christie, M.J., 1980. Electrodermal activity. In Martin, I., Venables, P.H. (Eds.), Techniques in Psychophysiology. John Wiley Sons. 

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