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Auditory perception in patients with CVA without aphasia.

M Bergman, T Najenson, S Hirsch

    Scandinavian Journal of Rehabilitation Medicine. Supplement
    |January 1, 1985
    PubMed
    Summary

    Stroke patients with hemiplegia showed central auditory dysfunction unrelated to temporal lobe damage. These auditory processing deficits differ between right and left hemisphere injuries, with limited functional transfer in adults.

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    Area of Science:

    • Neuroscience
    • Auditory Neuroscience
    • Clinical Neurology

    Background:

    • Central auditory dysfunction is often linked to temporal lobe lesions following stroke.
    • Hemiplegia resulting from stroke can present with subtle or no aphasia symptoms.
    • Previous assumptions about auditory processing localization may not encompass all stroke-related deficits.

    Purpose of the Study:

    • To investigate central auditory function in patients with hemiplegia post-stroke.
    • To determine if auditory dysfunctions are localized to temporal lobes or other brain regions.
    • To compare auditory processing differences between right and left hemisphere lesions.

    Main Methods:

    • Evaluated 64 hemiplegic patients with normal hearing and minimal aphasia using central auditory function tests.
    • Included a subset of 34 patients without clinical signs of temporal lobe involvement.
    • Employed selective listening tasks: competing message tasks and dichotic listening tasks.

    Main Results:

    • Central auditory dysfunctions were identified in patients, irrespective of temporal lobe lesion evidence.
    • Distinct patterns of auditory dysfunction were observed for right versus left hemisphere damage.
    • Compensatory functional transfer to the right hemisphere was primarily observed only in young children.

    Conclusions:

    • Central auditory processing deficits in hemiplegic stroke patients are not exclusively linked to temporal lobe lesions.
    • Hemisphere-specific auditory processing impairments highlight lateralization of function.
    • Limited neuroplasticity for auditory function transfer in adults suggests potential for targeted rehabilitation.

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