BOLD responses discriminating win and loss for both sessions. (A) A whole-brain analysis revealed greater activation in the NAc, vmPFC, and bilateral hippocampal complex for win than loss trials across both sessions (P < 0.05, corrected). (B) BOLD time course of activation in the NAc, vmPFC, and bilateral hippocampal complex for win and loss trials in the feedback and instructed sessions (*, significant difference of time points near activation peaks, P < 0.05; ± SEM).