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Related Experiment Videos

Brainstem auditory evoked potential and blink reflex in multiple sclerosis.

R Kayamori, Q S Dickins, T Yamada

    Neurology
    |October 1, 1984
    PubMed
    Summary

    Brainstem auditory evoked potential (BAEP) and blink reflex (BR) abnormalities are common in multiple sclerosis (MS) patients. Pontine lesions can affect BAEP latency, and unilateral BAEP issues may involve uncrossed auditory pathways.

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    Area of Science:

    • Neurology
    • Neurophysiology

    Background:

    • Multiple Sclerosis (MS) is a demyelinating disease affecting the central nervous system.
    • Auditory and trigeminal pathways are susceptible to MS lesions.

    Purpose of the Study:

    • To investigate the correlation between Brainstem Auditory Evoked Potential (BAEP) and Blink Reflex (BR) abnormalities in patients with Multiple Sclerosis (MS).
    • To determine the impact of pontine lesions on BAEP parameters and auditory pathway involvement.

    Main Methods:

    • Evaluated 130 patients with MS using Brainstem Auditory Evoked Potential (BAEP) and Blink Reflex (BR) tests.
    • Analyzed the interwave latencies (I-III and III-V) of BAEP in relation to BR abnormalities.
    • Correlated unilateral and bilateral BR involvement with BAEP findings.

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    Main Results:

    • 40% of MS patients showed abnormal BAEP, and 26% had abnormal BR.
    • BR was affected in 53% of patients with abnormal BAEP (I-III interval) and 41% (III-V interval).
    • Unilateral BR abnormalities correlated with ipsilateral or bilateral BAEP involvement, while bilateral BR abnormalities often showed unilateral or bilateral BAEP issues.

    Conclusions:

    • Pontine lesions in MS can lead to prolonged I-III or III-V interwave latencies in BAEP.
    • Unilateral BAEP abnormalities in MS patients suggest involvement of the uncrossed auditory pathways.