Drinking, Antidiuresis and Milk Ejection from Electrical Stimulation within the Hypothalamus of the Goat

Abstract

Summary. 1. In a further study of polydipsia caused by electrical stimulation within the hypothalamus of the goat, drinking could be obtained at 33 points of stimulation in 9 animals. The localization of these points is given. 2. In the anterior part of the “drinking area”, drinking evoked by stimulation was combined with antidiuresis and milk ejection (7 points of stimulation). 3. Stimulation in or adjacent to the paraventricular ur supraoptic nuclei or in the supraoptico‐hypophyseal tract was followed by inhibition of water diuresis and milk ejection. No drinking was seen during these stimulations. 4. Notable side effects seen during the stimulations were: temporary increase of diuresis (in the posterior part of the “drinking area”), licking, panting (in a small region in the anterior and dorsal hypothalamus) and a strange behavioral pattern, which normally may be related to a “sexual” smell in the goat.