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1 Vestibulo-Ocular Reflex (VOR) CancellationShows the vestibulo-ocular reflex (VOR) cancellation test. Inlcudes a close-up view.Image/MovingImage
2 Central Lesion with Direction-Changing NystagmusWith central causes of acute vestibular syndrome, it is not uncommon for the nystagmus to have a gaze-evoked component due to failure of gaze-holding circuits in the cerebellum or brainstem. In such instances, the nystagmus may reverse direction when the patient looks in the direction of the slow ph...Image/MovingImage
3 Peripheral Lesion with Direction-Fixed NystagmusTypical spontaneous nystagmus associated with acute peripheral vestibular lesions is dominantly horizontal in vector and generally beats in one direction regardless of the eye position within the orbits. The nystagmus is usually present in the primary position, increases in gaze toward the direction...Image/MovingImage
4 Supine Roll Test (Pagnini-McClure Maneuver)This video illustrates bedside technique for the supine roll test (also known as the Pagnini-McClure maneuver) for horizontal canal benign paroxysmal positional vertigo (BPPV).This maneuver is specific for horizontal canal BPPV in the same way that the Dix-Hallpike maneuver is specific for posterior...Image/MovingImage
5 Dix-Hallpike test for the left posterior semicircular canalShows the diagnostic Dix-Hallpike maneuver for the left posterior semicircular canalImage/MovingImage
6 3-Component H.I.N.T.S. batteryDescribes the 3-Component H.I.N.T.S. (Head Impulse, Nystagmus, Test of Skew) battery. A wide-angle view of the tests is followed by a close-up view. Please note that in the wide-angle view, the order of the tests is as would be typically conducted in practice (searching first for spontaneous nystagm...Image/MovingImage
7 Penlight-cover TestIllustrates the penlight-cover test used to compare spontaneous nystagmus with and without fixationImage/MovingImage
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