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Cue-Induced Potentiation of Feeding

Description: Food consumption is controlled by both internal and external factors. Environmental signals associated with food may prepare an animal to forage, consume and digest more effectively. Furthermore, environmental cues that provide information about food availability enable animals to make predictions about future food resources and act upon that knowledge in appropriate fashion. For example, when exposed to a cue that signals the presence of food, an animal experiencing, or having experienced, hunger can eat beyond its present needs to cope with predicted future famine. Interestingly, cues paired with meal interruption have a similar effect. That is, cues previously paired with surprising meal terminations can increase food consumption later. Here, using a novel Pavlovian conditioning procedure, food-deprived mice learned to associate a conditioned stimulus with an unexpected termination of a food trial. Subsequently, when experimental food was made available, sated mice consumed more food in the presence of these cues than when exposed to cues that were paired with food, or in the absence of any discrete food-related signals.

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Cue-Induced Potentiation of Feeding

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