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dc.contributor.authorMueller, E. M.
dc.contributor.authorHofmann, S. G.
dc.contributor.authorSantesso, D. L.
dc.contributor.authorMeuret, A. E.
dc.contributor.authorBitran, Stella
dc.contributor.authorPizzagalli, Diego A
dc.date.accessioned2010-06-15T13:20:59Z
dc.date.issued2009
dc.identifier.citationMueller, E. M., S. G. Hofmann, D. L. Santesso, A. E. Meuret, Stella Bitran, and Diego A. Pizzagalli. 2009. Electrophysiological evidence of attentional biases in social anxiety disorder. Psychological Medicine 39(7): 1141-1152.en_US
dc.identifier.issn0033-2917en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4215079
dc.description.abstractBackground: Previous studies investigating attentional biases in social anxiety disorder (SAD) have yielded mixed results. Recent event-related potential (ERP) studies using the dot-probe paradigm in non-anxious participants have shown that the P1 component is sensitive to visuospatial attention towards emotional faces. We used a dot-probe task in conjunction with high-density ERPs and source localization to investigate attentional biases in SAD. Method: Twelve SAD and 15 control participants performed a modified dot-probe task using angry–neutral and happy–neutral face pairs. The P1 component elicited by face pairs was analyzed to test the hypothesis that SAD participants would display early hypervigilance to threat-related cues. The P1 component to probes replacing angry, happy or neutral faces was used to evaluate whether SAD participants show either sustained hypervigilance or decreased visual processing of threat-related cues at later processing stages. Results: Compared to controls, SAD participants showed relatively (a) potentiated P1 amplitudes and fusiform gyrus (FG) activation to angry–neutral versus happy–neutral face pairs; (b) decreased P1 amplitudes to probes replacing emotional (angry and happy) versus neutral faces; and (c) higher sensitivity (d′) to probes following angry–neutral versus happy–neutral face pairs. SAD participants also showed significantly shorter reaction times (RTs) to probes replacing angry versus happy faces, but no group differences emerged for RT. Conclusions: The results provide electrophysiological support for early hypervigilance to angry faces in SAD with involvement of the FG, and reduced visual processing of emotionally salient locations at later stages of information processing, which might be a manifestation of attentional avoidance.en_US
dc.description.sponsorshipPsychologyen_US
dc.language.isoen_USen_US
dc.publisherCambridge University Pressen_US
dc.relation.isversionofdoi:10.1017/S0033291708004820en_US
dash.licenseOAP
dc.subjectangeren_US
dc.subjectattentionen_US
dc.subjectelectrophysiologyen_US
dc.subjectfacesen_US
dc.subjecthypervigilance-avoidance hypothesisen_US
dc.subjectsocial anxiety disorderen_US
dc.subjectsocial phobiaen_US
dc.titleElectrophysiological Evidence of Attentional Biases in Social Anxiety Disorderen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalPsychological Medicine -London-en_US
dash.depositing.authorPizzagalli, Diego A
dc.date.available2010-06-15T13:20:59Z
dc.identifier.doi10.1017/S0033291708004820*
dash.contributor.affiliatedBitran, Stella
dash.contributor.affiliatedPizzagalli, Diego


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