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Specialization for written words over objects in the visual cortex


Specialization for written words over objects in the visual cortex

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dc.contributor.author Szwed, Marcin [SAP14006443] pl
dc.contributor.author Dehaene, Stanislas pl
dc.contributor.author Kleinschmidt, Andreas pl
dc.contributor.author Eger, Evelyn pl
dc.contributor.author Valabrègue, Romain pl
dc.contributor.author Amadon, Alexis pl
dc.contributor.author Cohen, Laurent pl
dc.date.accessioned 2016-04-25T12:14:06Z
dc.date.available 2016-04-25T12:14:06Z
dc.date.issued 2011 pl
dc.identifier.issn 1053-8119 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/24614
dc.language eng pl
dc.title Specialization for written words over objects in the visual cortex pl
dc.type JournalArticle pl
dc.description.physical 330 pl
dc.identifier.weblink http://www.scopus.com/inward/record.url?eid=2-s2.0-79953065387&partnerID=40&md5=01b972f6d6ef180be64ffe22883ff132 pl
dc.abstract.en The Visual Word Form Area (VWFA) is part of the left ventral visual stream that underlies the invariant identification of visual words. It remains debated whether this region is truly selective for words relative to common objects; why this particular part of the visual system is reproducibly engaged in reading; and whether reading expertise also relies on perceptual learning within earlier visual areas. In this fMRI study we matched written words and line-drawings of objects in luminance, contour length and number of features. We then compared them to control images made by scrambling procedures that kept local features intact. Greater responses to written words than to objects were found not only in the VWFA, but also in areas V1/V2 and V3v/V4. Furthermore, by contrasting stimuli reduced either to line junctions (vertices) or to line midsegments, we showed that the VWFA partially overlaps with regions of ventral visual cortex particularly sensitive to the presence of line junctions that are useful for object recognition. Our results indicate that preferential processing of written words can be observed at multiple levels of the visual system. It is possible that responses in early visual areas might be due to some remaining differences between words and controls not eliminated in the present stimuli. However, our results concur with recent comparisons of literates and illiterates and suggest that these early visual activations reflect the effects of perceptual learning under pressure for fast, parallel processing that is more prominent in reading than other visual cognitive processes. pl
dc.subject.en high-level vision pl
dc.subject.en letter recognition pl
dc.subject.en object recognition pl
dc.subject.en perceptual learning pl
dc.subject.en visual word form recognition pl
dc.description.volume 56 pl
dc.description.number 1 pl
dc.identifier.doi 10.1016/j.neuroimage.2011.01.073 pl
dc.identifier.eissn 1095-9572 pl
dc.title.journal NeuroImage pl
dc.language.container eng pl
dc.affiliation Wydział Filozoficzny : Instytut Psychologii pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2011 A]: 45

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