Show simple item record Stefanics, Gábor Csukly, Gábor Komlósi, Sarolta Czobor, Pál Czigler, István 2016-01-18T11:09:48Z 2016-01-18T11:09:48Z 2012
dc.identifier 84855434943
dc.identifier.citation pagination=3042-3049; journalVolume=59; journalIssueNumber=3; journalTitle=NEUROIMAGE;
dc.identifier.uri doi:10.1016/j.neuroimage.2011.10.041
dc.description.abstract Facial emotions express our internal states and are fundamental in social interactions. Here we explore whether the repetition of unattended facial emotions builds up a predictive representation of frequently encountered emotions in the visual system. Participants (n = 24) were presented peripherally with facial stimuli expressing emotions while they performed a visual detection task presented in the center of the visual field. Facial stimuli consisted of four faces of different identity, but expressed the same emotion (happy or fearful). Facial stimuli were presented in blocks of oddball sequence (standard emotion: p = 0.9, deviant emotion: p = 0.1). Event-related potentials (ERPs) to the same emotions were compared when the emotions were deviant and standard, respectively. We found visual mismatch negativity (vMMN) responses to unattended deviant emotions in the 170-360 ms post-stimulus range over bilateral occipito-temporal sites. Our results demonstrate that information about the emotional content of unattended faces presented at the periphery of the visual field is rapidly processed and stored in a predictive memory representation by the visual system. We also found evidence that differential processing of deviant fearful faces starts already at 70-120 ms after stimulus onset. This finding shows a 'negativity bias' under unattended conditions. Differential processing of fearful deviants were more pronounced in the right hemisphere in the 195-275 ms and 360-390 ms intervals, whereas processing of happy deviants evoked larger differential response in the left hemisphere in the 360-390 ms range, indicating differential hemispheric specialization for automatic processing of positive and negative affect. © 2011 Elsevier Inc. All rights reserved.
dc.relation.ispartof urn:issn:1053-8119
dc.title Processing of unattended facial emotions: A visual mismatch negativity study
dc.type Journal Article 2015-08-10T08:07:29Z
dc.language.rfc3066 en
dc.identifier.mtmt 1830512
dc.identifier.wos 000299494000102
dc.identifier.pubmed 22037000
dc.contributor.department SE/AOK/K/Pszichiátriai és Pszichoterápiás Klinika
dc.contributor.institution Semmelweis Egyetem

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