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Children show hemispheric differences in the basic auditory response properties

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Parviainen, Tiina
dc.contributor.author Helenius, Päivi
dc.contributor.author Salmelin, Riitta
dc.date.accessioned 2020-01-02T14:11:52Z
dc.date.available 2020-01-02T14:11:52Z
dc.date.issued 2019-06-15
dc.identifier.citation Parviainen , T , Helenius , P & Salmelin , R 2019 , ' Children show hemispheric differences in the basic auditory response properties ' , Human Brain Mapping , vol. 40 , no. 9 , pp. 2699-2710 . https://doi.org/10.1002/hbm.24553 en
dc.identifier.issn 1065-9471
dc.identifier.issn 1097-0193
dc.identifier.other PURE UUID: e6403768-acdd-4d26-9e7f-c61ea2ad5186
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/e6403768-acdd-4d26-9e7f-c61ea2ad5186
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85061932875&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/39055530/Parviainen_etal_HBM2019.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/42270
dc.description.abstract Auditory cortex in each hemisphere shows preference to sounds from the opposite hemifield in the auditory space. Besides this contralateral dominance, the auditory cortex shows functional and structural lateralization, presumably influencing the features of subsequent auditory processing. Children have been shown to differ from adults in the hemispheric balance of activation in higher-order auditory based tasks. We studied, first, whether the contralateral dominance can be detected in 7- to 8-year-old children and, second, whether the response properties of auditory cortex in children differ between hemispheres. Magnetoencephalography (MEG) responses to simple tones revealed adult-like contralateral preference that was, however, extended in time in children. Moreover, we found stronger emphasis towards mature response properties in the right than left hemisphere, pointing to faster maturation of the right-hemisphere auditory cortex. The activation strength of the child-typical prolonged response was significantly decreased with age, within the narrow age-range of the studied child population. Our results demonstrate that although the spatial sensitivity to the opposite hemifield has emerged by 7 years of age, the population-level neurophysiological response shows salient immature features, manifested particularly in the left hemisphere. The observed functional differences between hemispheres may influence higher-level processing stages, for example, in language function. en
dc.format.extent 1-12
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Wiley
dc.relation.ispartofseries Human Brain Mapping en
dc.rights openAccess en
dc.title Children show hemispheric differences in the basic auditory response properties en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Aalto University
dc.contributor.department University of Helsinki
dc.contributor.department Department of Neuroscience and Biomedical Engineering
dc.subject.keyword cortical maturation
dc.subject.keyword development
dc.subject.keyword electromagnetic brain imaging
dc.subject.keyword N100m
dc.subject.keyword N250m
dc.identifier.urn URN:NBN:fi:aalto-202001021381
dc.identifier.doi 10.1002/hbm.24553
dc.date.embargo info:eu-repo/date/embargoEnd/2020-02-19

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