Atypical Brain Activation of Reading Processes in Children With Developmental Dyslexia
نویسندگان
چکیده
منابع مشابه
Disruption of posterior brain systems for reading in children with developmental dyslexia.
BACKGROUND Converging evidence indicates a functional disruption in the neural systems for reading in adults with dyslexia. We examined brain activation patterns in dyslexic and nonimpaired children during pseudoword and real-word reading tasks that required phonologic analysis (i.e., tapped the problems experienced by dyslexic children in sounding out words). METHODS We used functional magne...
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We tested the hypothesis that crowding effects are responsible for the reading slowness characteristic of developmental dyslexia. A total of twenty-nine Italian dyslexics and thirty-three age-matched controls participated in various parts of the study. In Experiment 1, we measured contrast thresholds for identifying letters and words as a function of stimulus duration. Thresholds were higher in...
متن کاملBrain activation during reading in deep dyslexia: an MEG study.
Magnetoencephalographic (MEG) changes in cortical activity were studied in a chronic Finnish-speaking deep dyslexic patient during single-word and sentence reading. It has been hypothesized that in deep dyslexia, written word recognition and its lexical-semantic analysis are subserved by the intact right hemisphere. However, in our patient, as well as in most nonimpaired readers, lexical-semant...
متن کاملVisual control in children with developmental dyslexia.
PURPOSE To assess binocular control in children with dyslexia. METHODS Cross-sectional study with 26 children who were submitted to a set of ophthalmologic and visual tests. RESULTS In the dyslexic children less eye movement control in voluntary convergence and unstable binocular fixation was observed. CONCLUSION The results support the hypothesis that developmental dyslexia might present...
متن کاملFunctional neuroimaging studies of reading and reading disability (developmental dyslexia).
Converging evidence from a number of neuroimaging studies, including our own, suggest that fluent word identification in reading is related to the functional integrity of two consolidated left hemisphere (LH) posterior systems: a dorsal (temporo-parietal) circuit and a ventral (occipito-temporal) circuit. This posterior system is functionally disrupted in developmental dyslexia. Reading disable...
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ژورنال
عنوان ژورنال: Journal of Child Neurology
سال: 2002
ISSN: 0883-0738,1708-8283
DOI: 10.1177/08830738020170121601