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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-41376

Maurer, U; Schulz, E; Brem, S; der Mark, S van; Bucher, K; Martin, E; Brandeis, D (2011). The development of print tuning in children with dyslexia: Evidence from longitudinal ERP data supported by fMRI. NeuroImage, 57(3):714-722.

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A consistent finding in functional brain imaging studies of reading with dyslexia is reduced inferior occipito-temporal activation linked to deviant processing of visual word forms. Time-sensitive event-related potentials (ERP) further revealed reduced inferior occipito-temporal N1 tuning for print in dyslexic 2nd graders suggesting the reduction affects fast processing and the initial development of dyslexia. Here, we followed up the same groups with ERP recordings and investigated how fast print tuning deficits in dyslexia develop from 2nd to 5th grade. Using functional magnetic resonance imaging (fMRI), we further characterized spatial aspects of print tuning in the 5th grade. The robust N1 tuning deficit for print in the dyslexic 2nd graders had largely disappeared by grade 5 consistent with a developmental delay. Reduced word-specific activation in dyslexic 5th grader's fMRI data occurred bilaterally in middle temporal regions and in the left posterior superior sulcus. Although no group differences in inferior occipito-temporal regions appeared in the whole brain analysis, a region of interest analysis of the Visual Word Form Area revealed that control children showed a more lateralized word-specific activation pattern than the children with dyslexia. The results suggest that while impaired N1 tuning for print plays a major role for dyslexia at the beginning of learning to read, other aspects of visual word form processing in the same region remain impaired in dyslexic children after several years of reading practice. Overall, neural deficits associated with dyslexia appear to be plastic and to change throughout development and reading acquisition.


23 citations in Web of Science®
25 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Children's Hospital Zurich > Medical Clinic
04 Faculty of Medicine > Center for Child and Adolescent Psychiatry
04 Faculty of Medicine > Center for Integrative Human Physiology
06 Faculty of Arts > Institute of Psychology
Dewey Decimal Classification:570 Life sciences; biology
150 Psychology
610 Medicine & health
Deposited On:04 Jan 2011 15:34
Last Modified:05 Apr 2016 14:32
Publisher DOI:10.1016/j.neuroimage.2010.10.055
PubMed ID:21040695

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