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• W2539889017 abstract "Dopamine is known to influence motivational processes, however the precise role of this neurotransmitter remains a contentious issue. In the current study we sought to further characterize dopamine signaling in reward-based decision-making and consummatory behavior in mice, via lateral ventricle infusion of the dopamine D2 receptor antagonist eticlopride. In Experiment 1, we examined effort-based decision-making, in which mice had a choice between one lever, where a single response led to the delivery of a low value reward (2% sucrose); and a second lever, which led to a higher value reward (20% sucrose) that gradually required more effort to obtain. As the response schedule for the high value reward became more strict, low dose (4 μg in 0.5 μl) central infusions of eticlopride biased preference away from the high value reward, and toward the lever that led to the low value reward. Similarly, a higher dose of eticlopride (8 μg in 0.5 μl) also disrupted choice responding for the high value reward, however it did so by increasing omissions. In Experiment 2, we assessed the effects of eticlopride on consumption of 20% sucrose. The antagonist led to a dose-dependent reduction in intake, and through an analysis of licking microstructure, it was revealed that this in part reflected a reduction in the motivation to engage in consummatory behavior, rather than alterations in the evaluation of the reward. These results suggest that disruptions in D2 receptor signaling reduce the willingness to engage in effortful operant responding and consumption of a desirable outcome." @default.
• W2539889017 created "2016-11-04" @default.
• W2539889017 creator A5010687281 @default.
• W2539889017 creator A5076194092 @default.
• W2539889017 date "2017-03-01" @default.
• W2539889017 modified "2023-09-30" @default.
• W2539889017 title "Disruptions in effort-based decision-making and consummatory behavior following antagonism of the dopamine D2 receptor" @default.
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• W2539889017 doi "https://doi.org/10.1016/j.bbr.2016.10.043" @default.
• W2539889017 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27984049" @default.
• W2539889017 hasPublicationYear "2017" @default.
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