[Developmental changes of N400 event related potential of a semantic category decision task and modality specific findings in patients with developmental dyslexia].

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  • Author(s): Oana S;Oana S; Inagaki M; Suzuki S; Horimoto R; Kaga M
  • Source:
    No to hattatsu = Brain and development [No To Hattatsu] 2006 Nov; Vol. 38 (6), pp. 431-8.
  • Publication Type:
    English Abstract; Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    Japanese
  • Additional Information
    • Source:
      Publisher: Shindan to Chiryosha Country of Publication: Japan NLM ID: 0215224 Publication Model: Print Cited Medium: Print ISSN: 0029-0831 (Print) Linking ISSN: 00290831 NLM ISO Abbreviation: No To Hattatsu Subsets: MEDLINE
    • Publication Information:
      Original Publication: Tokyo, Shindan to Chiryosha.
    • Subject Terms:
      Electroencephalography* ; Evoked Potentials, Auditory*/physiology ; Evoked Potentials, Visual*/physiology; Dyslexia/*physiopathology; Adolescent ; Adult ; Cerebral Cortex/physiology ; Child ; Decision Making ; Dyslexia/psychology ; Female ; Humans ; Male ; Semantics
    • Abstract:
      We investigated modality-specific changes in N400 event related potential using a semantic category decision task in 38 control subjects and 8 patients with developmental dyslexia. In control children under 10 years old, auditory N400 showed a negative deflection over the fronto-centro-parietal areas with substantial amplitude. Control children over 10 years old showed a similar pattern of N400 waves in a visual and an auditory-visual modality, suggesting that the visual modality becomes dominant in the late teens. Dyslexic children showed more errors on a visual than auditory modality task with poorer N400 waves for visual stimuli. However, peak latencies of N400 in an auditory-visual modality were almost the same for auditory stimuli in control children. Differences in the N400 pattern in children might reflect the fragility and reversibility of the semantic processes through stimulus modalities.
    • Publication Date:
      Date Created: 20061111 Date Completed: 20061212 Latest Revision: 20180222
    • Publication Date:
      20221213
    • Accession Number:
      17094562