Chronically decerebrate rats demonstrate satiation but not bait shyness.
Taste substances applied to the oral cavity result in either ingestion or rejection, each with a characteristic muscular response pattern. These responses are the same in decerebrate and intact rats; the caudal brainstem appears to be the neural substrate of ingestion and rejection responses. The experiment determined whether decerebrates can alter these discriminative responses as a function of food deprivation or toxicosis. Food-deprived decerebrate rats, like intact ones, ingested a taste substance they had rejected when sated. However, these same decerebrates, in contrast to controls, neither rejected nor decreased ingestive reactions to a novel taste after that taste had been repeatedly paired with lithium chloride-induced illness. Although the forebrain may be important for integrating ingestion, some aspects of this control seem to be represented in caudal brain areas.
D000818:Animals; D001143:Arousal / Q000502:physiology; D001245:Association Learning / Q000502:physiology*; D001933:Brain Stem / Q000502:physiology*; D003655:Decerebrate State; D005247:Feeding Behavior / Q000502:physiology*; D005508:Food Deprivation; D007031:Hypothalamus / Q000502:physiology; D007858:Learning / Q000502:physiology*; D008094:Lithium; D051381:Rats; D012527:Satiation / Q000502:physiology; D013395:Sucrose; D013649:Taste / Q000502:physiology
D013395:Sucrose; D008094:Lithium