Hypothalamus, temperature regulation, and feeding in the rat.

HAMILTON, C. L., AND P. J. CIACCIA. I+~othalamus, ttwtperature regulation, and feeding in the rut. Am. J. Physiol. 221(3): 800-809. 1971 .-Rats were implanted with electrodes across the preoptic anterior hypothalamic region (POAH) of the brain. Radiofrequency heating of this area elevated its temperature by 1.25 C and resulted in a drop in core temperature and a rise in tail temperature. Twenty-four-hour POAH heating in other electrodeimplanted rats resulted in an increase in food consumption in six of eight rats tested. Heating of the ventromedial and posterior hypothalamus resulted in no changes in body temperature or food intake. In no case was water intake increased during the course of POAII heating.