Atypical Brain Activation of Reading Processes in Children with Developmental Dyslexia.

W.H. Backes; E.F.P.M. Vuurman; R. Wennekes; P. Spronk; M. Wuisman; J.M.A. van Engelshoven; J. Jolles

doi:10.1177/08830738020170121601

Atypical Brain Activation of Reading Processes in Children with Developmental Dyslexia.

W.H. Backes^*, E.F.P.M. Vuurman, R. Wennekes, P. Spronk, M. Wuisman, J.M.A. van Engelshoven, J. Jolles

^*Corresponding author for this work

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Abstract

Brain activation differences of reading-related processes between dyslexic and normal reading children were localized with functional magnetic resonance imaging (MRI). The children performed tasks that varied in visuospatial, orthographic, phonologic, and semantic processing demands. Enhanced activation of the left extrastriate cortex was found during all tasks in the dyslexic group. During orthographic processing, dyslexic children predominantly showed activation in the right prefrontal cortex, as also occurred during the visuo-spatial task. Normal readers also showed activation in the left prefrontal cortex. Dyslexic readers showed less activation of both the temporal and the prefrontal cortex during phonologic processing. The results suggest that dyslexic readers fail to use brain areas that are normally specialized in language processing, but rather use areas that underlie visuospatial processing.

Original language	English
Pages (from-to)	867-871
Journal	Journal of Child Neurology
Volume	17(12)
DOIs	https://doi.org/10.1177/08830738020170121601
Publication status	Published - 1 Jan 2002

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title = "Atypical Brain Activation of Reading Processes in Children with Developmental Dyslexia.",

abstract = "Brain activation differences of reading-related processes between dyslexic and normal reading children were localized with functional magnetic resonance imaging (MRI). The children performed tasks that varied in visuospatial, orthographic, phonologic, and semantic processing demands. Enhanced activation of the left extrastriate cortex was found during all tasks in the dyslexic group. During orthographic processing, dyslexic children predominantly showed activation in the right prefrontal cortex, as also occurred during the visuo-spatial task. Normal readers also showed activation in the left prefrontal cortex. Dyslexic readers showed less activation of both the temporal and the prefrontal cortex during phonologic processing. The results suggest that dyslexic readers fail to use brain areas that are normally specialized in language processing, but rather use areas that underlie visuospatial processing.",

author = "W.H. Backes and E.F.P.M. Vuurman and R. Wennekes and P. Spronk and M. Wuisman and {van Engelshoven}, J.M.A. and J. Jolles",

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AU - Backes, W.H.

AU - Vuurman, E.F.P.M.

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AU - Spronk, P.

AU - Wuisman, M.

AU - van Engelshoven, J.M.A.

AU - Jolles, J.

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N2 - Brain activation differences of reading-related processes between dyslexic and normal reading children were localized with functional magnetic resonance imaging (MRI). The children performed tasks that varied in visuospatial, orthographic, phonologic, and semantic processing demands. Enhanced activation of the left extrastriate cortex was found during all tasks in the dyslexic group. During orthographic processing, dyslexic children predominantly showed activation in the right prefrontal cortex, as also occurred during the visuo-spatial task. Normal readers also showed activation in the left prefrontal cortex. Dyslexic readers showed less activation of both the temporal and the prefrontal cortex during phonologic processing. The results suggest that dyslexic readers fail to use brain areas that are normally specialized in language processing, but rather use areas that underlie visuospatial processing.

AB - Brain activation differences of reading-related processes between dyslexic and normal reading children were localized with functional magnetic resonance imaging (MRI). The children performed tasks that varied in visuospatial, orthographic, phonologic, and semantic processing demands. Enhanced activation of the left extrastriate cortex was found during all tasks in the dyslexic group. During orthographic processing, dyslexic children predominantly showed activation in the right prefrontal cortex, as also occurred during the visuo-spatial task. Normal readers also showed activation in the left prefrontal cortex. Dyslexic readers showed less activation of both the temporal and the prefrontal cortex during phonologic processing. The results suggest that dyslexic readers fail to use brain areas that are normally specialized in language processing, but rather use areas that underlie visuospatial processing.

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DO - 10.1177/08830738020170121601

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Atypical Brain Activation of Reading Processes in Children with Developmental Dyslexia.

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