Noseworthy J H, Ebers G C, Leigh R J, Dell'Osso L F
Department of Clinical Neurological Sciences, University of Western Ontario, London, Canada.
Neurology. 1988 Jun;38(6):992-4. doi: 10.1212/wnl.38.6.992.
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.
