The chronometry of risk processing in the human cortex

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dc.contributor.authorSymmonds, Mkaelen
dc.contributor.authorMoran, Rosalyn J.en
dc.contributor.authorWright, Nicholas D.en
dc.contributor.authorBossaerts, Peteren
dc.contributor.authorBarnes, Garethen
dc.contributor.authorDolan, Raymond J.en
dc.date.accessioned2019-06-03T21:02:57Zen
dc.date.available2019-06-03T21:02:57Zen
dc.date.issued2013-08-20en
dc.description.abstractThe neuroscience of human decision-making has focused on localizing brain activity correlating with decision variables and choice, most commonly using functional MRI (fMRI). Poor temporal resolution means these studies are agnostic in relation to how decisions unfold in time. Consequently, here we address the temporal evolution of neural activity related to encoding of risk using magnetoencephalography (MEG), and show modulations of electromagnetic power in posterior parietal and dorsomedial prefrontal cortex (DMPFC) which scale with both variance and skewness in a lottery, detectable within 500 ms following stimulus presentation. Electromagnetic responses in somatosensory cortex following this risk encoding predict subsequent choices. Furthermore, within anterior insula we observed early and late effects of subject-specific risk preferences, suggestive of a role in both risk assessment and risk anticipation during choice. The observation that cortical activity tracks specific and independent components of risk from early time-points in a decision-making task supports the hypothesis that specialized brain circuitry underpins risk perception.en
dc.description.sponsorshipThe Wellcome Trusten
dc.format.extent11 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSymmonds M, Moran RJ, Wright ND, Bossaerts P, Barnes G and Dolan RJ (2013) The chronometry of risk processing in the human cortex. Front. Neurosci. 7:146. doi: 10.3389/fnins.2013.00146en
dc.identifier.doihttps://doi.org/10.3389/fnins.2013.00146en
dc.identifier.urihttp://hdl.handle.net/10919/89706en
dc.identifier.volume7en
dc.language.isoenen
dc.publisherFrontiersen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectdecision-makingen
dc.subjectmagnetoencephalography (MEG)en
dc.subjectrisken
dc.subjectneuroeconomicsen
dc.subjectcortexen
dc.titleThe chronometry of risk processing in the human cortexen
dc.title.serialFrontiers In Neuroscienceen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Destination Area: Adaptive Brain and Behavior (ABB)