Persistence of visual exploration in monkeys.

Abstract
Two expts. were designed to study the persistence of visual exploration in normal and brain-operated monkeys. Expt. I involved testing 6 animals 4 continuous hours a day for 5 days on a color discrimination problem in which the only reward was that provided by visual exploration of the surrounding environment. In Expt II, 7 animals were tested for one continuous session on a similar discrimination problem until they ceased responding to visual incentives. The motivational mechanism underlying performance is interpreted as being that of visual exploration, which, in addition to serving as a basis for discrimination learning, is extremely resistant to satiation. The data suggested that visual exploration motivation is depressed in monkeys with bilateral damage to the temporal lobes.
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