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• W3039148841 abstract "Abstract Unhealthy weight gain relates, in part, to how people make decisions based on prior experience. Here we conducted post hoc analysis on an archival data set to evaluate whether individual differences in adiposity, an anthropometric construct encompassing a spectrum of body types, from lean to obese, associate with signatures of asymmetric feedback learning during value-based decision-making. In a sample of neurologically healthy adults (N = 433), ventral striatal responses to rewards, measured using fMRI, were not directly associated with adiposity, but rather moderated its relationship with feedback-driven learning in the Iowa gambling task, tested outside the scanner. Using a biologically inspired model of basal ganglia-dependent decision processes, we found this moderating effect of reward reactivity to be explained by an asymmetrical use of feedback to drive learning; that is, with more plasticity for gains than for losses, stronger reward reactivity leads to decisions that minimize exploration for maximizing long-term outcomes. Follow-up analysis confirmed that individual differences in adiposity correlated with signatures of asymmetric use of feedback cues during learning, suggesting that reward reactivity may especially relate to adiposity, and possibly obesity risk, when gains impact future decisions more than losses." @default.
• W3039148841 created "2020-07-10" @default.
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• W3039148841 date "2020-06-29" @default.
• W3039148841 modified "2023-10-12" @default.
• W3039148841 title "Adiposity covaries with signatures of asymmetric feedback learning during adaptive decisions" @default.
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• W3039148841 doi "https://doi.org/10.1093/scan/nsaa088" @default.
• W3039148841 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7657458" @default.
• W3039148841 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32608485" @default.
• W3039148841 hasPublicationYear "2020" @default.
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