Abstract

Abstract Rats with experimental brain lesions were compared to control animals on tests of shock avoidance, approach to food and water in a runway, and hoarding behavior. Damage to several limbic and diencephalic structures impaired shock avoidance behavior, large medial thalamic lesions having the greatest effect. Hoarding behavior was subnormal if the anterior thalamus was injured and the severity of the behavioral defect was closely correlated with the extent of such injury. Simple approach behavior was normal in all the brain damaged animals.

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