File:Magnetic-Vestibular-Stimulation-(MVS)-As-a-Technique-for-Understanding-the-Normal-and-Diseased-video 1.ogv

English: A mixed horizontal–torsional eye movement in a healthy adult lying supine in the bore of a 7-T MRI machine. This unusual nystagmus pattern has a torsional component in which the top poles of the eyes rotate in a slow phase pattern of nystagmus away from the ear toward which the horizontal component of the slow phase is directed. This is in contrast to the more common pattern of a mixed horizontal–torsional nystagmus, for example, as seen after a unilateral loss of labyrinthine function, where the top poles of the eyes rotate in a slow phase toward the same ear as the horizontal component of the slow phase is directed. This reflects the unusual combined stimulation pattern of the anterior and lateral semicircular canals.