Document Detail


Influence of visually induced self-motion on postural stability.
MedLine Citation:
PMID:  15799576     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
CONCLUSION: Our results indicate that the illusion of self-motion is a significant factor leading to spatial disorientation. OBJECTIVE: Under normal circumstances, self-motion is perceived in response to motion of the head and body. However, under certain conditions, such as virtual reality environments, visually induced self-motion can be perceived even though the subject is not actually moving, a phenomenon known as "vection". The aim of this study was to examine the possible influence of illusory self-rotation (circular vection) on postural adjustments. MATERIAL AND METHODS: The subjects were 10 young females with no history of ocular or vestibular disease. Video-motion analysis was applied to measure postural movements during vertical optokinetic stimulation. RESULTS: For most subjects, movement of the visual surroundings induced head and body displacements in the same direction as that of the visual stimulus, regardless of the onset of self-motion perception. However, there was a significant increase in postural instability after the subjects began to perceive false self-motion in the opposite direction to that of the visual stimulus.
Authors:
Hiroaki Fushiki; Kenji Kobayashi; Masatsugu Asai; Yukio Watanabe
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta oto-laryngologica     Volume:  125     ISSN:  0001-6489     ISO Abbreviation:  Acta Otolaryngol.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2005-03-31     Completed Date:  2005-05-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370354     Medline TA:  Acta Otolaryngol     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  60-4     Citation Subset:  IM    
Affiliation:
Department of Otolaryngology, Toyama Medical & Pharmaceutical University, Toyama, Japan. hfushiki@ms.toyama-mpu.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Adult
Dizziness*
Female
Humans
Illusions
Photic Stimulation*
Posture*
Rotation*
Space Perception
Spatial Behavior
User-Computer Interface

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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