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Science 31 August 1962:
Vol. 137. no. 3531, pp. 665 - 666
DOI: 10.1126/science.137.3531.665
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Articles

Preception in the Rat: Autonomic Response to Shock as Function of Length of Warning Interval

David T. Lykken 1

1 Center for Personality Research, University of Minnesota, Minneapolis

The autonomic response (galvanic skin response) to a noxious stimulus (shock) is reduced when the stimulus is preceded by a warning signal. The greatest reduction, 53 percent, was obtained with a warning interval of 1 second. Warning also reduces variance of the response over trials, a decrease of over 90 percent for the optimum 1-second interval.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)