title: Compensatory head tilt in upbeating nystagmus.
abstract: Upbeating nystagmus has been described in lesions of the posterior fossa. We report a case of upbeating nystagmus accompanying a focal hemorrhagic lesion of the left brachium conjunctivum, the anterior vermis, and the anterior superior left cerebellar hemisphere. The nystagmus was suppressed by a contralateral head tilt. We postulate that in this instance, acquired central nystagmus was inhibited by the otolith-ocular reflex.
authors: Department of Neurology, Georgetown University Medical Center, Washington, D.C.
authors: J C
authors: JC
authors: Kattah
authors: T F
authors: TF
authors: Dagi
mesh_terms: D000293:Adolescent; D002543:Cerebral Hemorrhage / Q000150:complications*; D004585:Electrooculography; D005133:Eye Movements; D006257:Head; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000209:etiology / Q000503:physiopathology*; D011187:Posture; D014057:Tomography, X-Ray Computed