Behavioral and corticosterone effects in conditioned taste aversion following hippocampal lesions

Hippocampal-lesioned rats engaged in more drinking bouts during the retention of a conditioned taste aversion, but failed to show the elevation of plasma cortocosterone levels seen in the neocortical-lesioned and unoperated control animals, thus showing a disassociation of behavioral and hormonal responses to the retention situation. The presence or absence of anomalous sympathetic innervation in the hippocampal-lesioned rats was demonstrated to be without any behavioral significance.