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NONDISCRIMINATED AVOIDANCE OF SHOCK BY PIGEONS PECKING A KEY 1

1973; Wiley; Volume: 19; Issue: 2 Linguagem: Inglês

10.1901/jeab.1973.19-211

1938-3711

Elenice A. M. Ferrari, João Cláudio Todorov, Frederico Guilherme Graeff,

Animal Behavior and Welfare Studies

Four pigeons were trained to avoid shock by pecking a key on a free-operant avoidance schedule in which no exteroceptive stimulus signalled impending shock. Response rate was an inverse function of response-shock interval when shock-shock interval was held constant at 2 sec and response-shock intervals varied from 5 to 40 sec. Amphetamine increased response rates in two subjects and reserpine markedly reduced responding in one.