Anticipation of future food: suppression and facilitation of saccharin intake depending on the delay and type of future food.
A series of studies examined the (Sprague-Dawley) rat's tendency to suppress intake of .15% saccharin when it was followed by a second food after 4-, 16-, or 32-min delays. The second foods examined were 32% sucrose, 64% sucrose, lab chow, a Nutrasweet solution, skim milk, and chocolate milk. Saccharin intake was influenced by both the delay and the specific food available. Subsequent analysis showed that saccharin intake before the 4-min delay was an inverse function of the caloric value of the second food. However, saccharin intake before the 16-min delay was better predicted as an inverse function of the hedonic value of the second food. The results suggest that the caloric and hedonic values of a food may influence food selection across different time courses, and that the effective time horizon for the sequential comparison of foods depends on the specific foods that are compared.
Lucas
G A
GA
Indiana University, Bloomington 47405.
Timberlake
W
W
Gawley
D J
DJ
Drew
J
J
D000818:Animals; D001070:Appetitive Behavior; D004326:Drinking; D002149:Energy Intake; D005260:Female; D005518:Food Preferences; D006815:Hunger; D009753:Nutritive Value; D051381:Rats; D013649:Taste