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Visual-vestibular interaction in multiple sclerosis

J A Sharpe, H J Goldberg, A W Lo

    Neurology
    |April 1, 1981
    PubMed
    Summary
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    Visual suppression of the vestibuloocular reflex (VOR) is impaired in most multiple sclerosis patients without symptoms. This suggests VOR testing is a sensitive method for identifying early multiple sclerosis.

    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Neurology

    Background:

    • The vestibuloocular reflex (VOR) stabilizes vision during head movements.
    • Multiple sclerosis (MS) can affect neural pathways, potentially impacting VOR function.
    • Early detection of MS is crucial for management and treatment.

    Purpose of the Study:

    • To investigate visual modulation of the VOR in patients with multiple sclerosis (MS) who lack overt vestibular or ocular motor symptoms.
    • To assess the sensitivity of VOR testing as a potential diagnostic tool for early MS detection.

    Main Methods:

    • Analysis of visual suppression of the VOR in 20 patients with MS and no vestibular/ocular motor symptoms.
    • Measurement of VOR gains in darkness to assess vestibular adaptation.

    Related Experiment Videos

  • Comparison of VOR function between MS patients and healthy controls (implied).

    • Main Results:

    • 75% of MS patients exhibited impaired visual suppression of the VOR.
    • 35% of MS patients showed elevated VOR gains in darkness.
    • Elevated VOR gain in darkness is linked to vestibular adaptation from defective smooth pursuit, enhancing retinal image stability.

    Conclusions:

    • Impaired visual suppression of the VOR is highly prevalent in early-stage MS, rivaling the sensitivity of other diagnostic tests.
    • Vestibular plasticity, specifically adaptation to defective smooth pursuit, plays a role in maintaining visual stability in some MS patients.
    • VOR testing, particularly visual suppression, shows promise as a sensitive physiological marker for identifying multiple sclerosis.