title: Vertical optokinetic nystagmus.
mesh_terms: D002493:Central Nervous System Diseases / Q000150:complications*; D005133:Eye Movements; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000150:complications*; D009949:Orientation; D011187:Posture; D014724:Vestibular Function Tests