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Head Impulse Test in Unilateral Vestibular Loss

Legend: Video demonstrates overt versus covert corrective saccades. In some patients, corrective saccades are easily visualized by the examiner (ie, overt saccades) whereas in other patients they may be difficult to observe or may even be imperceptible to the examiner (ie, covert saccades). This video shows examples of overt and covert corrective saccades after the head-impulse test in two patients with unilateral vestibular loss.

Duration: 1:24

Associated with: CONTINUUM: Lifelong Learning in Neurology. 18(5):1041-1059, October 2012

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