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An Automatic Voltage Suppressor For the Measurement of Electrodermal Activity
Author(s) -
Simon Wolfgang R.,
Homoth Reiner W. G.
Publication year - 1978
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1978.tb01426.x
Subject(s) - skin conductance , subtraction , voltage , psychology , electronic circuit , suppressor , electrical engineering , chemistry , arithmetic , biomedical engineering , engineering , mathematics , biochemistry , gene
An automatic voltage suppressor is described which increases the resolution of skin conductance and/or skin potential responses, facilitates the measurement of the corresponding levels, and prepares both electrodermal quantities for automatic data processing. The device accomplishes: 1) scanning of the levels at preset moments, 2) digital storing of these values for the corresponding time intervals, 3) subtraction of the stored values (minus an adjustable reserve) from the input signals, and 4) amplification of the difference voltages. Easy and inexpensive construction of the apparatus is possible using a minimal number of highly integrated circuits.