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Performance of the feedback (FB) group across trials 101 and 150 of the WPT task as a function of mean percentage change in11C‐raclopride binding potential (RAC BPND) in the right ventral striatum. Percentage change is defined as RAC BPND change in ‘active’ (i.e., FB) relative to ‘control’ task. A decrease in percent change of RAC BPND is indicative of greater release of synaptic dopamine. Error bars are standard error. R = right, VS = ventral striatum.
