Abstract:
:We compared private and social decision making to investigate the neural underpinnings of the effect of social comparison on risky choices. We measured brain activity using functional MRI while participants chose between two lotteries: in the private condition, they observed the outcome of the unchosen lottery, and in the social condition, the outcome of the lottery chosen by another person. 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.
journal_name
Proc Natl Acad Sci U S Aauthors
Bault N,Joffily M,Rustichini A,Coricelli Gdoi
10.1073/pnas.1100892108subject
Has Abstractpub_date
2011-09-20 00:00:00pages
16044-9issue
38eissn
0027-8424issn
1091-6490pii
1100892108journal_volume
108pub_type
杂志文章,随机对照试验abstract::Two adjacent, divergently transcribed, developmentally regulated genes of the maize chloroplast chromosome have different superhelical density/transcriptional activation profiles when transcribed in vitro by the homologous DNA-dependent RNA polymerase. Promoter-specific transcription of the gene for the beta and epsil...
journal_title:Proceedings of the National Academy of Sciences of the United States of America
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abstract::Experimental exclusion of the Andean flamingo (Phoenicoparrus andinus) from shallow water areas of a salt lake in the Bolivian Andes caused large increases in the biomass of microorganisms inhabiting the surface sediments, especially a large diatom (Surirella wetzeli), amebas, ciliates, and nematodes. This is a conser...
journal_title:Proceedings of the National Academy of Sciences of the United States of America
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更新日期:1996-07-23 00:00:00
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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