Abstract

Rats with anodal lesions centered in the bed nuclei of the stria terminalis were subjected to a pain-elicited fighting paradigm. A transient increase in agonistic behavior was observed in S pairs which were allowed a 6–7-day recovery period and in pairs which were run only 24 h postsurgery. The increase in reflexive fighting was accompanied by a heightened startle response, which was replaced by shock-elicited stereotyped gnawing behavior when the fighting responses decreased.

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