Morphological identification of brain stem neurones associated with predatory behaviour elicited by lateral hypothalamic electrical stimulation in the cat: a retrograde transport study using horseradish peroxidase subsequent to an electrolytic lesion

Abstract

The combination of electrical stimulation of the lateral hypothalamus to elicit predatory behaviour, an electrolytic lesion and a subsequent HRP injection was used to identify brain stem neurones whose axons were affected by such hypothalamic stimulation. In contrast, the injection of HRP into such hypothalamic sites, without a prior lesion, resulted in a significant reduction in the number of labelled neurones. This suggests that an important contribution, namely those neurones which give rise to fibres which pass through the stimulated region, is underestimated by the later procedure.