title: Dynamic and static subjective visual vertical with aging.
abstract: OBJECTIVE
  Our vestibular function is gradually deteriorating during aging, although, its behavioral consequences are not easily recognized due to a substitution process by other sensory modalities as visual or proprioceptive inputs.
  
  
  METHODS
  To reveal such a hidden substitution process by visual signals, the measurement of the static as well as the dynamic subjective visual vertical (SVV) was performed among 63 healthy subjects of different age.
  
  
  RESULTS
  The static SVV was found to be stable among all subjects, whereas the shift of the dynamic SVV during rotation of a background scene gradually increased with age.
  
  
  CONCLUSIONS
  This result indicates that the substitution process identified as a function of age in a perceptual test may have its counterpart in postural stabilizing reflex.
authors.affiliation: Department of Otorhinolaryngology, School of Medicine, Keio University, 35 Shinanomachi Shin-juku, 160-8582, Tokyo, Japan.
authors.forename: Hironari
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Yujiro
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Higashino
authors.forename: Akira
authors.initials: A
authors.lastname: Saito
authors.forename: Takanobu
authors.initials: T
authors.lastname: Kunihiro
authors.forename: Jin
authors.initials: J
authors.lastname: Kanzaki
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Goto
mesh_terms: D000328:Adult; D000375:Aging / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010468:Perceptual Disorders / Q000175:diagnosis* / Q000503:physiopathology*; D011187:Posture / Q000502:physiology; D011434:Proprioception / Q000502:physiology*; D012018:Reflex / Q000502:physiology; D015837:Vestibular Diseases / Q000503:physiopathology; D014796:Visual Perception / Q000502:physiology*