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Dysgraphia after right hemisphere stroke.

D E Hartman, S J Briggs, B Vishwanat

    Archives of Physical Medicine and Rehabilitation
    |March 1, 1985
    PubMed
    Summary
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    Dysgraphia, a writing disorder, can result from right-hemisphere strokes, impacting graphemic selection and spatial organization. Rehabilitation involving structured writing tasks successfully restored the patient's writing abilities.

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Neurolinguistics

    Background:

    • Acquired dysgraphia is typically associated with left-hemisphere lesions, affecting graphemic selection and spatial-temporal organization.
    • The precise neural correlates of writing centers remain debated, with some evidence pointing to left-hemispheric involvement.

    Observation:

    • A patient presented with acquired dysgraphia following a right-hemispheric stroke.
    • The patient exhibited no significant limb apraxia or visual field deficits, with only subtle language impairments beyond the writing disturbance.

    Findings:

    • The patient's dysgraphia was characterized by both graphemic selection difficulties and spatial-temporal disorganization.
    • Intensive, progressive writing rehabilitation, including picture/word responses, dictation, and self-generated sentences, led to full recovery of writing function.

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  • The findings suggest that right-hemispheric lesions can cause dysgraphia, potentially as part of a subtle aphasia or spatial-temporal disorder.

    • Implications:

    • This case challenges the traditional view of writing centers being exclusively localized in the left hemisphere.
    • It highlights the potential for significant recovery from acquired dysgraphia through targeted therapeutic interventions.
    • Understanding the diverse neural underpinnings of dysgraphia is crucial for developing effective treatment strategies.