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Related Experiment Videos

Speech fluency in crossed aphasia.

V W Henderson

    Brain : a Journal of Neurology
    |December 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Right hemisphere strokes can cause fluent aphasia in right-handed individuals, mirroring left-brain language organization. This suggests right-hemisphere language dominance doesn't prevent specialized visuospatial processing.

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    Area of Science:

    • Neuroscience
    • Neurology
    • Cognitive Science

    Background:

    • Typically, the left hemisphere dominates language processing in most individuals.
    • Crossed aphasia, a rare condition, occurs when aphasia results from a right hemisphere lesion in right-handed individuals.

    Observation:

    • Three strongly right-handed patients presented with fluent aphasia following right hemisphere infarction.
    • Computerized tomography confirmed the location of the brain lesions.

    Findings:

    • The correlation between fluency and infarct localization in these patients mirrored that of right-handed aphasics with left-sided lesions.
    • This suggests that right hemisphere language representation often mirrors typical left hemisphere language dominance.
    • Two patients also exhibited hemispatial inattention and visuoconstructive deficits.

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    Implications:

    • Right hemisphere language dominance does not preclude ipsilateral specialization for visuospatial functions.
    • Understanding crossed aphasia enhances our knowledge of brain lateralization and functional organization.