Abstract

Abstract Food deprived rats experienced 210 contiguous pairings of a tone with food delivery. Subsequently, a food satiated group was presented with a bar which, if pressed, elicited the tone. During a test session the subjects received alternating periods of electrical stimulation of the lateral hypothalamus (ESLH) and periods of non-stimulation. A control group was similarly treated except that the tone was never presented during the test session. Results revealed that the experimental group was more responsive than the controls, but only during ESLH. These findings are analogous to similar experiments where food-deprivation was substituted for ESLH, and hence support the view that there is a strong resemblance between ESLH and hunger.

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