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Cortical Effects of Shifting Letter Position in Letter Strings of Varying Length

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Cornelissen, Piers
dc.contributor.author Tarkiainen, Antti
dc.contributor.author Helenius, Päivi
dc.contributor.author Salmelin, Riitta
dc.date.accessioned 2015-05-18T09:00:48Z
dc.date.available 2015-05-18T09:00:48Z
dc.date.issued 2003
dc.identifier.citation Cornelissen, Piers & Tarkiainen, Antti & Helenius, Päivi & Salmelin, Riitta. 2003. Cortical Effects of Shifting Letter Position in Letter Strings of Varying Length. Journal of Cognitive Neuroscience. Volume 15, Issue 5. P. 731-746. ISSN 0898-929X (printed). DOI: 10.1162/jocn.2003.15.5.731. en
dc.identifier.issn 0898-929X (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/16066
dc.description.abstract Neuroimaging and lesion studies suggest that occipitotemporal brain areas play a necessary role in recognizing a wide variety of objects, be they faces, letters, numbers, or household items. However, many questions remain regarding the details of exactly what kinds of information are processed by the occipito-temporal cortex. Here, we address this question with respect to reading. Ten healthy adult subjects performed a single word reading task. We used whole-head magnetoencephalography to measure the spatio-temporal dynamics of brain responses, and investigated their sensitivity to: (1) lexicality (defined here as the difference between words and consonant strings), (2) word length, and (3) variation in letter position. Analysis revealed that midline occipital activity around 100 msec, consistent with low-level visual feature analysis, was insensitive to lexicality and variation in letter position, but was slightly affected by string length. Bilateral occipito-temporal activations around 150 msec were insensitive to lexicality and reacted to word length only in the timing (and not strength) of activation. However, vertical shifts in letter position revealed a hemispheric imbalance: The right hemisphere activation increased with the shifts, whereas the opposite pattern was evident in the left hemisphere. The results are discussed in the light of Caramazza and Hillis's (1990) model of early reading. en
dc.format.extent 731-746
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher MIT Press en
dc.relation.ispartofseries Journal of Cognitive Neuroscience en
dc.relation.ispartofseries Volume 15, Issue 5
dc.rights © 2003 MIT Press. This is the final version of the article: Cornelissen, Piers ; Tarkiainen, Antti ; Helenius, Päivi ; Salmelin, Riitta. 2003. Cortical Effects of Shifting Letter Position in Letter Strings of Varying Length. Journal of Cognitive Neuroscience. Volume 15, Issue 5. P. 731-746. ISSN 0898-929X (printed). DOI: 10.1162/jocn.2003.15.5.731, which has been published in final form at http://www.mitpressjournals.org/doi/abs/10.1162/jocn.2003.15.5.731#.VVl5sGOkuSo en
dc.subject.other Linguistics en
dc.subject.other Medical sciences en
dc.title Cortical Effects of Shifting Letter Position in Letter Strings of Varying Length en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder MIT Press
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Neurotieteen ja lääketieteellisen tekniikan laitos fi
dc.contributor.department Department of Neuroscience and Biomedical Engineering en
dc.subject.keyword cortical effects en
dc.subject.keyword occipito-temporal cortex en
dc.subject.keyword whole-head magnetoencephalography en
dc.identifier.urn URN:NBN:fi:aalto-201505182709
dc.type.dcmitype text en
dc.identifier.doi 10.1162/jocn.2003.15.5.731
dc.type.version Final published version en


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