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Analytic Measures for Quantification of Arousal from Spontaneous Skin Conductance Fluctuations

Overview
Journal Int J Psychophysiol
Publisher Elsevier
Specialty Psychiatry
Date 2010 Feb 11
PMID 20144665
Citations 46
Authors
Dominik R Bach
Karl J Friston
Raymond J Dolan
Affiliations
Soon will be listed here.
Abstract

Autonomic arousal is often indexed by spontaneous fluctuations in skin conductance. Here, we derive a simple measure of sympathetic arousal, using a convolution model of how sudomotor bursting causes fluctuations in skin conductivity. Under this model, the time-integral of measured conductance is proportional to the frequency and amplitude of sudomotor bursts. We demonstrate the validity of this measure in relation to finite impulse response models, and show that it is a better predictor of autonomic arousal, relative to conventional measures.

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