Neural mechanism underlying human consensus decision-making (Suzuki et al., 2015).
(A) Illustration of the computational model. Subjective value of each option is computed through integrating one’s own preference, group-members’ prior choices and one’s inference about how much each option is stuck to by the other group-members, and then finally converted to the choice probability.
(B) Neural correlates of the three key computational variables. vmPFC: ventromedial prefrontal cortex; TPJ: temporoparietal junction; and IPL: inferior parietal lobule.
(C) Neural correlates of the integrated choice probability. dACC, dorsal anterior cingulate cortex.
(D) Functional connectivity between dACC and each of the three regions individually tracking the key computational variables.