BEHAVIORAL CHANGES FOLLOWING RHINENCEPHALIC INJURY IN CAT

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Abstract
The salient features of altered behavior observed in cats after bilateral injury of the amygdaloid nuclei and adjacent structures include: (1) over-interest and increased motor activity in response to visual stimuli; (2) exaggerated oral and vocal behavior; (3) relative docility; and (4) a state of hypersexuality. In the malc prepns., hypersexual behavior is characterized by repeated daily copulation with estrous femalcs, homosexual activities, and repeated attempts to copulate with agoutis (Dasyprocta agouti), dogs, monkeys, and chickens. Such sexual activities are abolished by castration and do not occur if the prepns. are castrated at the time of placement of rhinencephalic lesions.