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- W2129414565 abstract "Abstract Spontaneous fluctuations (SF) in skin conductance are often used to index sympathetic arousal and emotional states. SF are caused by sudomotor nerve activity (SNA), which is a direct indicator of sympathetic arousal. Here, we describe a dynamic causal model (DCM) of how SNA causes SF, and apply variational Bayesian model inversion to infer SNA, given empirically observed SF. The estimated SNA bears a relationship to the number of SF as derived from conventional (semi‐visual) analysis. Crucially, we show that, during public speaking induced anxiety, the estimated number of SNA bursts is a better predictor of the (known) psychological state than the number of SF. We suggest dynamic causal modeling of SF potentially allows a more precise and informed inference about arousal than purely descriptive methods." @default.
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- W2129414565 date "2011-01-06" @default.
- W2129414565 modified "2023-10-16" @default.
- W2129414565 title "Dynamic causal modeling of spontaneous fluctuations in skin conductance" @default.
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- W2129414565 doi "https://doi.org/10.1111/j.1469-8986.2010.01052.x" @default.
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