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The measurement of electrodermal activity: An instrument for recording log skin admittance

Authors
Journal
Biological Psychology
0301-0511
Publisher
Elsevier
Publication Date
Volume
1
Issue
2
Identifiers
DOI: 10.1016/0301-0511(73)90007-0

Abstract

Abstract A case is advanced for the measurement of electrodermal activity by means of the direct recording of the log skin admittance (a.c. conductance) at a low frequency. An instrument is described in which this is achieved by using a constant-voltage 5 Hz source and a logarithmic amplifier. The outstanding advantages of an a.c. system are negligible electrode polarization effects and the ability to use dissimilar electrodes and contact media.

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