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dc.contributor.authorUji, Makoto
dc.contributor.authorJentzsch, Ines
dc.contributor.authorRedburn, James
dc.contributor.authorVishwanath, Dhanraj
dc.date.accessioned2020-04-25T23:34:00Z
dc.date.available2020-04-25T23:34:00Z
dc.date.issued2019-06
dc.identifier258758557
dc.identifierd8420ea2-0ae3-4dfc-b674-1012fd1b43ac
dc.identifier85065063196
dc.identifier000493911900036
dc.identifier.citationUji , M , Jentzsch , I , Redburn , J & Vishwanath , D 2019 , ' Dissociating neural activity associated with the subjective phenomenology of monocular stereopsis : an EEG study ' , Neuropsychologia , vol. 129 , pp. 357-371 . https://doi.org/10.1016/j.neuropsychologia.2019.04.017en
dc.identifier.issn0028-3932
dc.identifier.otherORCID: /0000-0002-9445-6353/work/57088539
dc.identifier.otherORCID: /0000-0001-5621-1024/work/64360891
dc.identifier.otherORCID: /0000-0002-8095-0537/work/64697718
dc.identifier.urihttps://hdl.handle.net/10023/19854
dc.descriptionSupport for DV and MU was provided by the Leverhulme Trust Research Project Grant (Grant Reference RGP-2016-269).en
dc.description.abstractThe subjective phenomenology associated with stereopsis, of solid tangible objects separated by a palpable negative space, is conventionally thought to be a by-product of the derivation of depth from binocular disparity. However, the same qualitative impression has been reported in the absence of disparity, e.g., when viewing pictorial images monocularly through an aperture. Here we aimed to explore if we could identify dissociable neural activity associated with the qualitative impression of stereopsis, in the absence of the processing of binocular disparities. We measured EEG activity while subjects viewed pictorial (non-stereoscopic) images of 2D and 3D geometric forms under four different viewing conditions (Binocular, Monocular, Binocular aperture, Monocular aperture). EEG activity was analysed by oscillatory source localization (beamformer technique) to examine power change in occipital and parietal regions across viewing and stimulus conditions in targeted frequency bands (alpha: 8–13Hz & gamma: 60–90Hz). We observed expected event-related gamma synchronization and alpha desynchronization in occipital cortex and predominant gamma synchronization in parietal cortex across viewing and stimulus conditions. However, only the viewing condition predicted to generate the strongest impression of stereopsis (monocular aperture) revealed significantly elevated gamma synchronization within the parietal cortex for the critical contrasts (3D vs. 2D form). These findings suggest dissociable neural processes specific to the qualitative impression of stereopsis as distinguished from disparity processing.
dc.format.extent3400348
dc.language.isoeng
dc.relation.ispartofNeuropsychologiaen
dc.subjectStereopsisen
dc.subjectMonocular apertureen
dc.subjectEEGen
dc.subjectQualitative impressionen
dc.subjectParietal cortexen
dc.subjectGamma synchronizationen
dc.subjectRC0321 Neuroscience. Biological psychiatry. Neuropsychiatryen
dc.subjectBF Psychologyen
dc.subjectNDASen
dc.subject.lccRC0321en
dc.subject.lccBFen
dc.titleDissociating neural activity associated with the subjective phenomenology of monocular stereopsis : an EEG studyen
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.institutionUniversity of St Andrews. School of Psychology and Neuroscienceen
dc.identifier.doi10.1016/j.neuropsychologia.2019.04.017
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-04-26
dc.identifier.grantnumberRPG-2016-269en


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