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Previous work has implicated the cholinergic system in modulating feeding behavior; however, its specific function remains unclear. This work aims to characterize potential dissociations between the central cholinergic modulation of the incentive properties of food and food-associated cues, and consummatory behaviors. Three separate experiments demonstrated that intra-accumbens infusion of the muscarinic antagonist scopolamine 3 hr before the testing session significantly decreased food intake. General motor activity in anticipation of food was not diminished. Experiments also showed that scopolamine did not impair operant responding for a food-associated conditioned reinforcer (CR), nor was d-amphetamine potentiation of CR responding altered by scopolamine pretreatment. This study contributes to the growing evidence that goal-seeking behaviors are mediated by a set of neural processes distinct from those governing food reward.

Intra-accumbens infusion of a muscarinic antagonist reduces food intake without altering the incentive properties of food-associated cues.