Neural mechanisms underlying human consensus decision-making

Shinsuke Suzuki, Ryo Adachi, Simon Dunne, Peter Bossaerts, John P. O'Doherty

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Consensus building in a group is a hallmark of animal societies, yet little is known about its underlying computational and neural mechanisms. Here, we applied a computational framework to behavioral and fMRI data from human participants performing a consensus decision-making task with up to fiveother participants. We found that participants reached consensus decisions through integrating their own preferences with information about the majority group members' prior choices, as well as inferences about how much each option was stuck to by the other people. These distinct decision variables were separately encoded in distinct brain areas-the ventromedial prefrontal cortex, posterior superior temporal sulcus/temporoparietal junction, and intraparietal sulcus-and were integrated in the dorsal anterior cingulate cortex. Our findings provide support for a theoretical account in which collective decisions are made through integrating multiple types of inference about oneself, others, and environments, processed in distinct brain modules.

Original languageEnglish
Pages (from-to)591-602
Number of pages12
JournalNeuron
Volume86
Issue number2
DOIs
Publication statusPublished - 2015 Apr 22
Externally publishedYes

ASJC Scopus subject areas

  • Neuroscience(all)

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