Abstract
COX, J. R., C. E. CRUZ AND J. RUGER. Effect of total amygdalectomy upon regulation of salt intake in rats. BRAIN RES. BULL. 3(5) 431–435, 1978.—Sodium appetite was studied in rats with lesions destroying the entire amygdaloid nuclear complex. The rats were totally aphagic and adipsic for several days following lesioning but regained nearly normal levels of food and water intake about 2 to 3 weeks postoperatively. Intake of 3% saline was observed after induction of sodium appetite by treatment with a mineralocorticoid and a natriuretic agent. Rats with amygdaloid lesions generally manifested severe but not total loss of sodium appetite. Regulation of water intake was also moderately to severely impaired. Suggestive evidence was obtained that recovery of sodium appetite in amygdalectomized rats can be enhanced by postoperative experience with sodium appetite and saline reinforcement.
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