Fig. 2.

(A) A random effects, whole-brain contrast of equitable > inequitable decisions revealed activity in the OFC. (B) The response of this region was reduced significantly during inequitable choices, even though such decisions led to the receipt of money by the participant. (C) A random effects, whole-brain parametric analysis revealed that response in a similar region of OFC correlated with the magnitude of monetary gains when nothing was at stake for the recipient. (D) Responses in this independently defined region were reduced significantly during inequitable choices and did not differentiate between different types of equitable choice. Error bars represent SEM.