Reports

Positive and Negative Reinforcement from Intracranial Stimulation of a Teleost

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Science  18 May 1962:
Vol. 136, Issue 3516, pp. 648-649
DOI: 10.1126/science.136.3516.648

Abstract

Tests in which an animal receives or avoids direct electrical stimulation of its brain according to its position in the tank as well as tests of free operant behavior demonstrate the existence of both positively and negatively rewarding areas in the brain of the goldfish.