title: [Brain mapping studies in dyslexia].
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.
authors.forename: M
authors.initials: M
authors.lastname: García de León
authors.forename: J A
authors.initials: JA
authors.lastname: Portellano
authors.forename: J
authors.initials: J
authors.lastname: Cabanyes
authors.forename: L
authors.initials: L
authors.lastname: González
mesh_terms: D001931:Brain Mapping; D002648:Child; D004410:Dyslexia / Q000503:physiopathology*; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male
vernacular_title: Estudios de cartografía cerebral en la dislexia.