Shared temporoparietal dysfunction in dyslexia and typical readers with discrepantly high IQ
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nihms829491.pdf
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Author(s)
Hancock, Roeland
Hoeft, Fumiko
Gabrieli, John D. E.
Date Issued
November 2016
Journal
Trends in Neuroscience and Education
Publisher
Elsevier BV
Citation
Hancock, Roeland et al. “Shared Temporoparietal Dysfunction in Dyslexia and Typical Readers with Discrepantly High IQ.” Trends in Neuroscience and Education 5, 4 (December 2016): 173–177 © 2016 Elsevier GmbH
Version
Author's final manuscript
Abstract
It is currently believed that reading disability (RD) should be defined by reading level without regard to broader aptitude (IQ). There is debate, however, about how to classify individuals who read in the typical range but less well than would be expected by their higher IQ. We used functional magnetic resonance imaging (fMRI) in 49 children to examine whether those with typical reading ability, but discrepantly low relative to IQ, show dyslexia-like activation patterns during reading. Children who were typical readers with high-IQ discrepancy showed reduced activation in left temporoparietal neocortex relative to two control groups of typical readers without IQ discrepancy. This pattern was consistent and spatially overlapping with results in children with RD compared to typically reading children. The results suggest a shared neurological atypicality in regions associated with phonological processing between children with dyslexia and children having typical reading ability that is substantially below their IQ.
MIT Department
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/J.TINE.2016.10.001
