Abstract
Lateral hypothalamic electrical stimulation induced eating of cat food and of lab pellets in sated rats. The threshold for stimulation-induced eating was lower for the cat food, which was preferred in the home cage. A conditioned taste aversion was established for the cat food, and stimulation-induced eating of the cat food but not the pellets was temporarily eliminated. As the taste aversion wore off stimulation-induced eating of the cat food reappeared but frequently at elevated thresolds; the thresholds returned to preaversion levels after a few days. These data indicate that motivationally adequate lateral hypothalamic stimulation need not cause performance of eating behavior; just as performance of eating can be inhibited in naturally hungry animals, so can it be inhibited in animals motivated by stimulation.
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