期刊
JOURNAL OF NEUROSCIENCE METHODS
卷 184, 期 2, 页码 224-234出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jneumeth.2009.08.005
关键词
Skin conductance; SCR; Galvanic skin response; GSR; Electrodermal activity; EDA; Convolution; Deconvolution; General linear model; Linear time invariant filter
资金
- Wellcome Trust [088130] Funding Source: Medline
Event-related skin conductance responses (SCRs) are traditionally analysed by comparing the amplitude of individual peaks against a pre-stimulus baseline. Many experimental manipulations in cognitive neuroscience dictate paradigms with short inter trial intervals, precluding accurate baseline estimation for SCR measurements. Here, we present a novel and general approach to SCR analysis, derived from methods used in neuroimaging that estimate responses using a linear convolution model. In effect, the method obviates peak-scoring and makes use of the full SCR. We demonstrate, across three experiments, that the method has face validity in analysing reactions to a loud white noise and emotional pictures, can be generalised to paradigms where the shape of the response function is unknown and can account for parametric trial-by-trial effects. We suggest our approach provides greater flexibility in analysing SCRs than existing methods. (C) 2009 Elsevier B.V. All rights reserved.
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