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Related Experiment Videos

Writing impairment in schizophasia: two case studies.

A M Coron1, E Stip, C Dumont

  • 1Centre de recherche Fernand Séguin, Hopital L.H. Lafontaine, Université de Montréal.

Brain and Cognition
|June 17, 2000
PubMed
Summary

This study examined dictation performance in patients with paranoid schizophrenia and glossomanic schizophasia. Findings revealed graphemic paragraphias, indicating dysfunction in cognitive writing processes.

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Area of Science:

  • Neuropsychology
  • Psychiatry
  • Linguistics

Background:

  • Paranoid schizophrenia is a severe mental disorder.
  • Glossomanic schizophasia is a rare subtype characterized by speech disturbances.
  • Understanding the cognitive underpinnings of writing deficits in schizophrenia is crucial.

Observation:

  • Two patients with paranoid schizophrenia and glossomanic schizophasia underwent standardized neuropsychological testing.
  • Their dictation-taking performance was assessed using a specific protocol (Lecours, 1996).
  • Performance was compared against normative data from the general population.

Findings:

  • Patients exhibited graphemic paragraphias, substituting target graphemes with phonemically or visually similar ones.
  • Examples include replacing 'ph' with 'f' or 'v' for the /f/ phoneme in French.

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  • These specific errors suggest localized breakdowns in the cognitive writing system.

    • Implications:

    • The findings highlight specific phonological-to-graphemic conversion deficits in schizophrenia.
    • This research contributes to cognitive models of writing and language processing.
    • Further investigation into the neural basis of these writing errors is warranted.