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Regression coefficients for the obtained reward and the expected value at time of outcome in the two anatomically defined ROIs. Each data point represents one subject. In each ROI, the coefficients are strongly correlated (right NAC, dashed line, ρ = 0.72; p = 0.002; regression slope, 0.66; left NAC, solid line, ρ = 0.70; p = 0.003; regression slope, 0.88).
