The extinction of avoidance responses under curare.

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Abstract
Dogs trained in an avoidance response to shock "were curarized (using d-tubocurarine chloride) for a series of trials at the beginning of extinction."Since this involved complete flaccid paralysis of skeletal musculature, the instrumental response could not be made on these trials. Regular extinction was continued after the dogs had recovered from curarization. "Dogs receiving extinction trials while immobilized . . . required fewer trials to reach the extinction criterion and made fewer responses during extinction (when tested after recovery . . .) than animals which had not" been curarized. 3 possible interpretations of the results are discussed. From Psyc Abstracts 36:01:1DK19B. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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