title: Oscillopsia associated with dysfunction of visual cortex.
abstract: OBJECTIVE
  To investigate the cause of oscillopsia without nystagmus or vestibular dysfunction in a 31-year-old man with no past history of serious illness.
  
  
  METHODS
  The changes in the regional cerebral blood flow elicited by visual stimuli were studied by positron emission tomography (PET) in the patient and were compared with changes in normal subjects. The primary visual cortex (PVC) and area V5 were defined on Talairach coordinates, as shown in previous PET studies, and were confirmed with their activation patterns in our subjects.
  
  
  RESULTS
  Flicker stimulation (8 Hz) and a stationary random dot pattern activated area V5 in the patient, but not in the six normal controls. A moving random dot pattern activated both the PVC and the extra-striate cortex in both the patient and the controls.
  
  
  CONCLUSIONS
  Oscillopsia in this case is associated with dysfunction of the visual cortices and may be caused by it.
authors.affiliation: Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University Graduate School, Tokyo, Japan.
authors.forename: Yukihisa
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Motohiro
authors.initials: M
authors.lastname: Kiyosawa
authors.forename: Manabu
authors.initials: M
authors.lastname: Mochizuki
authors.forename: Masato
authors.initials: M
authors.lastname: Wakakura
authors.forename: Kenji
authors.initials: K
authors.lastname: Ishii
authors.forename: Michio
authors.initials: M
authors.lastname: Senda
mesh_terms: D000328:Adult; D001931:Brain Mapping; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000150:complications* / Q000000981:diagnostic imaging; D004585:Electrooculography; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009039:Motion Perception; D015835:Ocular Motility Disorders / Q000209:etiology*; D010468:Perceptual Disorders / Q000209:etiology*; D012039:Regional Blood Flow; D014055:Tomography, Emission-Computed; D014793:Visual Cortex / Q000098:blood supply* / Q000000981:diagnostic imaging