Fig. S5.

Neural representations of expected value, utility, reward probability, reward magnitude, and squared reward magnitude. (A) Neural representation of expected value. Activity in a network of brain regions including mPFC was significantly correlated with expected value of the gamble at the time of decision in Self trials (P < 0.05 FWE corrected at cluster-level; GLM I). (B) Relationship between neural effects of expected value and behavioral risk-preference. For each brain region whose activity correlated with expected reward, we regressed the neural effect (β value of the expected value regressor in GLM I) against the behavioral risk-preference across sessions and then plotted the regression slope (mean $\pm$ SEM across participants). The format is the same for Fig. 2G. IFG, inferior frontal gyrus; n.s., nonsignificant as P > 0.05 (Bonferroni corrected based on the number of activated clusters); PCC, posterior cingulate cortex; TPJ, temporoparietal junction. (C) Relationship between neural effects of utility (GLM III) and behavioral risk-preference. The format is the same for B. pSTS, posterior superior temporal sulcus. (D) Relationship between neural effects of reward probability (GLM II) and behavioral risk-preference. The format is the same for B. (E) Relations between neural effects of reward magnitude (GLM II) and behavioral risk-preference. The format is the same for B. (F) Relations between neural effects of squared reward magnitude (GLM IV) and behavioral risk-preference. The format is the same for B.