Abstract

Hippocampal electrical activity was recorded in freely moving animals during normal feeding behavior, lateral-hypothalamic stimulation, and during eating and drinking induced by such stimulation. In contrast to the irregular and desynchronized hippocampal activity observed during normal feeding behavior, stimulus-bound eating and drinking were associated with synchronization of hippocampal activity. The peak frequency of theta rhythms during such elicited consummatory behavior was 1-2 Hz below that evoked by the stimulation in the absence of consummatory objects. The results point up differences between normal and stimulus-evoked consummatory behavior and the influence of consummatory activity upon electrophysiological state.

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