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    Simple vestibular evoked myogenic potential (VEMP) and subjective visual vertical/horizontal (SVV/H) tests can now assess otolith function in clinics. These tests help diagnose vestibular disorders by evaluating static and dynamic otolith function.

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    Area of Science:

    • Neurology
    • Otolaryngology
    • Vestibular System Physiology

    Background:

    • Otolith function testing is crucial for diagnosing vestibular disorders.
    • Current methods are often confined to research settings.
    • Simple, reliable clinical tests are needed for otolith assessment.

    Purpose of the Study:

    • To introduce vestibular evoked myogenic potential (VEMP) and subjective visual vertical/horizontal (SVV/H) tests for clinical otolith function assessment.
    • To demonstrate the utility of these tests in characterizing otolith dysfunction patterns and severity.

    Main Methods:

    • Cervical and ocular VEMPs measure dynamic otolith function via sound/vibration-induced potentials.
    • Subjective visual vertical/horizontal (SVV/H) tests assess static utricular function and perceived gravitational orientation.
    • Combined VEMP and SVV/H testing with semicircular canal function tests.

    Main Results:

    • VEMPs and SVV/H tests enable characterization of otolith dysfunction in common vestibular disorders.
    • These tests aid in diagnostic profiling for vestibular neuritis and Ménière's disease.
    • VEMPs assist in pre-surgical confirmation of superior semicircular canal dehiscence and identifying vestibular schwannoma.

    Conclusions:

    • VEMP and SVV/H tests offer a practical approach to clinical otolith function assessment.
    • These tests enhance diagnostic capabilities for various vestibular conditions.
    • Integration into routine clinical practice can transform otolith disorder diagnosis and management.