EXAGGERATED PRANDIAL DRINKING IN RECOVERED LATERAL RAT WITHOUT SALIVA

Rats that have recovered from the initial aphagia and adipsia of lateral hypothalamic damage drink more water after interruption of salivary flow. Ss were 9 recovered lateral rats. The increased drinking is due entirely to an exaggeration of the prandial style of drinking that is characteristic of the recovered lateral rat. That is, the Ss increase the frequency and volume of the minute drafts of water that are drunk immediately after a morsel of dry food is taken into the mouth. These same Ss do not drink in response to challenges to the regulation of body water. Drinking in the recovered lateral S is therefore controlled, not by imbalances in body water, but by mouth dryness. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1969 American Psychological Association.