Aversive training: long-term effects.
Three years ago a tone ending in unavoidable electric shock was periodically presented to pigeons while they pecked a key for food. When pecking was disrupted by tone, shock was disconnected and the training tone and tones of different frequencies were presented. At first all tones caused a reduction in the rate of pecking, but as testing proceeded the gradient narrowed. In our study, testing was resumed after a 2(1/2)-year interruption. Despite the interruption the tones still suppress behavior.
D000818:Animals; D001519:Behavior; D010856:Columbidae; D003214:Conditioning, Classical; D003213:Conditioning, Psychological; D004597:Electroshock; D013995:Time
BEHAVIOR; CONDITIONED LEARNING