[Brain mapping studies in dyslexia].

M García de León; J A Portellano; J Cabanyes; L González

PubMed · 2619439

[Brain mapping studies in dyslexia].

M García de León·J A Portellano·J Cabanyes·L González

Abstract

Brain EEG mapping has been recorded during three different conditions, rest closed eyes, rest open eyes, and reading task, in a group of 22 dyslexic children, age mean 9.3 years, range 8-11, and control group of normal readers of the same age. All the subjects were right-handed, and laterality was assessed through the Edinburgh test. The individual maps in dyslexic and controls were averaged, and mean maps of both groups were obtained for a very different experimental condition. Rest closed eyes maps of dyslexics and controls disclose a powerful and symmetric alpha over occipital areas, with higher energy peak at 8.5-9.5 Hz., without significant differences in both groups. Brain maps centered in the fast beta band, 18-25 Hz., disclose significant differences in control group versus dyslexics, with more power in control group over all areas. Our findings suggest less adequate brain activation in dyslexics during reading tasks.

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Brain Mapping Child Dyslexia Electroencephalography Female Humans Male English Abstract Journal Article

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M García de León, J A Portellano, J Cabanyes, L González. [Brain mapping studies in dyslexia].. https://pubmed.ncbi.nlm.nih.gov/2619439/

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