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  • Simultaneous pattern electrorentinogram and visual evoked potential recordingsin dyslexic children
    Brecelj, Jelka ; Štrucl, Martin ; Raič, Vanda
    To help clarify the conflicting evidence of neurophysiologic abnormalities in children with reading problems (dyslexia), we examined pattern electroretinograms and visual evoked potentials to ... stimulation with checks of 24', 49' and 180', each at 5%, 42% and 100% contrast, in a group of dyslexic children and a group of normal (i.e., normally reading) children. Neurophysiologic difference between the groups was restricted to the visual evoked potential, which showed a significant prolongation of the P100 wave in dyslexic children at the highest contrast (100%) and the smallest checks (24'). There was no significant difference between normal and dyslexic children in the P50 and N95 pattern electroretinogram waves. These results support the assumption of a visual deficit in dyslexic children. However, theyare not consistent with the evidence of an isolated deficit of the magnocellular function, which, theoretically, would cause more prominent visual evoked potential changes to lower contrast and the largest chech stimuli.
    Vir: Documenta ophthalmologica. - ISSN 0012-4486 (Letn. 94, 1998, str. 355-364)
    Vrsta gradiva - članek, sestavni del
    Leto - 1998
    Jezik - angleški
    COBISS.SI-ID - 9062105

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