title: Torsional nystagmus: quantitative features and possible pathogenesis.
abstract: We measured eye rotations in three planes in a patient with acquired, torsional nystagmus. This nystagmus had linear or increasing-velocity waveforms, was increased after active pitch rotations of the head, and was suppressed by convergence. Magnetic resonance imaging demonstrated a midpontine lesion that was probably a venous angioma. We postulate that torsional nystagmus in this patient was due to disruption of central vestibular connections.
authors: Department of Clinical Neurological Sciences, University of Western Ontario, London, Canada.
authors: J H
authors: JH
authors: Noseworthy
authors: G C
authors: GC
authors: Ebers
authors: R J
authors: RJ
authors: Leigh
authors: L F
authors: LF
authors: Dell'Osso
mesh_terms: D000328:Adult; D001927:Brain Diseases / Q000150:complications; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000209:etiology / Q000503:physiopathology*; D011149:Pons; D014102:Torsion Abnormality