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Left ventral striatum β values for reward bias contrasts, by group. Individual left ventral striatum parameter estimates by subject in each group for (A) gain cue minus loss cue activity and (B)Q-value regressor. ∗∗∗Group difference, adjusting for effects of age, sex, and handedness, adjusted caudate volume, and depression scores, with significance of p < .005. a.u., arbitrary units.
