Abnormal Nystagmus Induced by Peripheral Vestibular Disorders

Electrophysiological measurement of the eye rotation axis using stimulation a single semicircular canal nerve showed that rotated around perpendicular to plane stimulated canal. Therefore, affected can be identified by analyzing in cases abnormal nystagmus. When main component nystagmus is horizontal, origin lateral torsional, anterior and/or posterior The excitatory quite same as inhibitory nystagmus, although direction opposite between and Vestibular neuritis mostly involves superior vestibular nerve. transmits sensory information transmitted from hair cells located canals. patients with exhibit both horizontal torsional components caused inhibition In Ménière's disease, during vertigo attack, seen. Because involving ratio each contributing ratios three canals vary, also varies. While purely some cases, it others. type BPPV, Dix-Hallpike maneuver, transient directed toward side BPPV (canalolithiasis), geotropic positional seen when patient supine. (cupulolithiasis), apogeotropic