期刊
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
卷 80, 期 2, 页码 87-95出版社
ELSEVIER
DOI: 10.1016/j.ijpsycho.2011.02.002
关键词
Skin conductance; Non-specific fluctuations; Ambulatory recording; Arousal
资金
- Department of Veterans Affairs
- NIH [RO1 MH-66953]
- Gottlieb Daimler-und Karl Benz-Stiftung
- Gesellschaft von Freunden und Foerderern der TU Dresden
- Roland Ernst Stiftung
Little is known how much skin conductance (SC) recordings from the fingers are affected by factors such as electrode site deterioration, ambient temperature (TMP), or physical activity (ACT), or by age, sex, race, or body mass index. We recorded SC, IMP, and ACT in 48 healthy control subjects for a 24-hour period, and calculated SC level (SCL), its standard deviation, the coefficient of SC variation, and frequency and amplitude of non-specific SC fluctuations. One method of assessing electrode site deterioration showed an average decline of 20%, while a second method found no significant change. All SC measures were higher during waking than sleep. Other factors influenced different measures in different ways. Thus, 24-hour SC recording outside the laboratory is feasible, but some measures need to be corrected for the influence of confounding variables. (C) 2011 Elsevier B.V. All rights reserved.
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