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At least 595 records · Page 33Linked to original sources
PubMed1977

A cortical evoked potential that reflects the conditioned, positive incentive value of the stimulus. II. Drive motivation (hunger).

It was shown that the late negative wave evoked in squirrel monkey cortex by tone cues signalling the availability of reward was smaller when the animal did not respond to the cue and often disappeared if the animal ignored many cues in succession. It decreased in amplitude as a test session progressed, and the rate of this decrease increased if the rate of reinforcement was increased. In some animals the size of the evoked wave was smaller if the animal was not fasted before a test session. In some animals the average size of a significant positive correlation with the number of cues responded to and a negative correlation with the animal's average reaction time. It is concluded that the evoked wave is probably a reflection of the conditioned incentive value of the cue.

Animals↗
PubMed1983

Early streptozotocin diabetes and hunger.

The initial effect of streptozotocin diabetes is not hyperphagia, but reduced food intake. Diabetic hyperphagia reaches maximum only after many days. Utilization of body fat may account for the delayed appearance of diabetic hyperphagia; this effect may be mediated by plasma fat metabolites. Plasma levels of free fatty acids (FFAs), ketone bodies, and glycerol are greatly elevated following STZ treatment, but return nearly to normal as diabetic hyperphagia appears.

Animals↗
PubMed1987

Effect of naltrexone on food intake, hunger, and satiety in obese men.

Increasing doses of naltrexone (25 to 200 mg) given over 4 consecutive days reduced intake of laboratory luncheon meals by 30% in 17 obese men. Meal size remained suppressed in the laboratory during the week following naltrexone administration. Water intake in the laboratory and body weight were not affected. Rates of ingestion and subjective ratings suggested that naltrexone reduced appetite rather than promoted early satiation. Nausea and other side effects occurred on 1 or 2 days during the naltrexone week in seven subjects whose food intake was reduced. Food intake was also reduced in seven of the remaining 10 subjects who reported no adverse reactions. These results suggest that a conditioned taste aversion or a conditioned anorexia may have developed in some subjects.

Adolescent↗