abstract
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No differences were found between muricidal and non-muricidal or between ranacidal and non-ranacidal hooded rats in septal or amygdaloid after-discharge thresholds. Bilateral kindling or bilateral sub-threshold stimulation of the amygdala or septum did not induce or inhibit muricide or ranacide or facilitate intraspecific aggression. Bilateral kindling of the amygdala or septum tended to impair performance on a passive avoidance task but sub-threshold stimulation of these regions did not.