Journal
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
Volume 76, Issue 1, Pages 52-55Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpsycho.2010.01.011
Keywords
Skin conductance (SCR); Galvanic skin response (GSR); Electrodermal activity (EDA); Linear time-invariant filter (LTI); Area under the curve (AUC)
Funding
- Wellcome Trust
- Swiss National Science Foundation
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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 (C) 2010 Elsevier B V All rights reserved.
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