Reversed corrective saccades during head impulse test in acute cerebellar dysfunction

Jeong Yoon Choi, Ji Soo Kim, Jin Man Jung, Do Young Kwon, Moon Ho Park, Chulhan Kim, June Choi

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Patients with cerebellar lesions may show horizontal (positive)- or downward (perverted)-corrective saccades during horizontal head impulse test (HIT). However, corrective saccades in the direction of head rotation (reversed corrective saccades) have not been reported during HIT. We present two patients who showed reversed corrective saccades during horizontal HIT as an initial sign of acute cerebellitis. In contrast to the corrective saccades mostly observed in peripheral vestibular paresis, this paradoxical response indicates abnormally increased vestibulo-ocular responses due to cerebellar disinhibition over the vestibulo-ocular reflex. This paradoxical response should be considered an additional bedside cerebellar sign.

    Original languageEnglish
    Pages (from-to)243-247
    Number of pages5
    JournalCerebellum
    Volume13
    Issue number2
    DOIs
    Publication statusPublished - 2014 Apr

    Keywords

    • Cerebellum
    • Head impulse test
    • Vertigo
    • Vestibulo-ocular reflex

    ASJC Scopus subject areas

    • Neurology
    • Clinical Neurology

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