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The striatum, a reward-related brain structure, showed higher activity when participants won more than their counterpart (social gains) compared with winning in isolation and lower activity when they won less than their counterpart (social loss) compared with private loss. The medial prefrontal cortex, implicated in social reasoning, was more activated by social gains than all other events. Sensitivity to social gains influenced both brain activity and behavior during subsequent choices. Specifically, striatal activity associated with social gains predicted medial prefrontal cortex activity during social choices, and experienced social gains induced more risky and competitive behavior in later trials. These results show that interplay between reward and social reasoning networks mediates the influence of social comparison on the decision process.<\/jats:p>","DOI":"10.1073\/pnas.1100892108","type":"journal-article","created":{"date-parts":[[2011,9,6]],"date-time":"2011-09-06T22:38:14Z","timestamp":1315348694000},"page":"16044-16049","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":154,"title":["Medial prefrontal cortex and striatum mediate the influence of social comparison on the decision process"],"prefix":"10.1073","volume":"108","author":[{"given":"Nad\u00e8ge","family":"Bault","sequence":"first","affiliation":[{"name":"Cognitive Neuroscience Centre, Centre National de la Recherche Scientifique, Unit\u00e9 Mixte de Recherche 5229, 69675 Bron, France;"},{"name":"Center for Research in Experimental Economics and Political Decision-Making, and Cognitive Science Center Amsterdam, University of Amsterdam, 1018TV Amsterdam, The Netherlands;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mateus","family":"Joffily","sequence":"additional","affiliation":[{"name":"Cognitive Neuroscience Centre, Centre National de la Recherche Scientifique, Unit\u00e9 Mixte de Recherche 5229, 69675 Bron, France;"},{"name":"Center for Mind\/Brain Sciences, University of Trento, 38060 Mattarello, Italy;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aldo","family":"Rustichini","sequence":"additional","affiliation":[{"name":"Department of Economics, University of Minnesota, Minneapolis, MN 55455; 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