Social behavior of rats with chronic prefrontal lesions

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Studied the social behavior of adult male Wistar albino rats in 6 experiments following medial frontal (n = 20) or orbital frontal (n = 14) lesions. 34 Ss served as controls. While both lesion groups showed transient increases in emotionality, only the Ss with orbital frontal lesions showed changes in social behavior. They were more aggressive in male-male aggression and shock-induced aggression but failed to differ from controls on tests of gregariousness, territorial aggression, and predatory aggression. Data may provide support for C. M. Leonard's (1969) suggestion that the orbital frontal cortex of rats and monkeys is homologous. (27 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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