2015年4月22日水曜日

Neural mechanisms underlying human consensus decision-making

Caltechに来て始めた研究がNeuron誌から出版されました!

"Neural mechanisms underlying human consensus decision-making"
Shinsuke Suzuki, Ryo Adachi, Simon Dunne, Peter Bossaerts, John P. O’Doherty.
Neuron, Volume 86, Issue 2, p591–602, 22 April 2015
http://www.cell.com/neuron/abstract/S0896-6273(15)00215-9

ヒトの集団的意思決定(グループ内での合意形成)の計算論モデルとその神経基盤を示しました。
同業者の皆様、ぜひ引用してやって下さい。

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 five other 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.