Role of Anterior Midcingulate Cortex in Self-Reward Representation and Reward Allocation Judgments within Social Context

In this study, we aimed to disentangle the neural correlates underlying reward processes and social decision-making since previous findings have been inconsistent. Specifically, we manipulated share sizes of dictator games (DG) and examined the brain activation in response to value of reward for the self/others without or within context using fMRI. Then, we collected data regarding willingness and preference for making these offers in a post-scan behavioral task. Furthermore, we examined how elicited neural activities vary with individual differences from the aspect of self-benefit, altruism, and reward distribution context.