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Delayed auditory tone perception in multiple sclerosis.

D B Quine, D Regan, T J Murray

    The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques
    |August 1, 1983
    PubMed
    Summary
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    Multiple sclerosis (MS) patients often experience auditory perception delays, even with normal hearing tests. These delays may contribute to difficulties understanding speech in individuals with MS.

    Area of Science:

    • Neuroscience
    • Audiology
    • Clinical Neurology

    Background:

    • Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
    • MS can impact various sensory pathways, including auditory processing.
    • Speech comprehension deficits are a common complaint among MS patients.

    Purpose of the Study:

    • To investigate auditory perception delays in multiple sclerosis patients.
    • To determine if auditory processing abnormalities correlate with normal audiometric findings.
    • To explore the potential link between auditory delays and speech comprehension difficulties in MS.

    Main Methods:

    • A psychophysical technique was employed to measure auditory perception delays.
    • Auditory delays were assessed at three distinct tone frequencies.

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  • Auditory acuity for left-right asynchrony was also evaluated.

    • Main Results:

    • Nineteen out of 30 MS patients exhibited abnormal auditory delays at one or more frequencies.
    • Fifteen of these patients with abnormal delays had normal audiograms.
    • Thirteen patients demonstrated poor auditory acuity for left-right asynchrony, with 9 having normal audiograms.

    Conclusions:

    • Auditory perception delays, particularly within specific frequency bands, are prevalent in MS patients.
    • These delays can occur independently of standard audiogram results.
    • Auditory processing deficits may partially explain speech comprehension impairments in multiple sclerosis.