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Testing of visual dependency on body sway and its application to balance rehabilitation

Research Project

Project/Area Number 13671782
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionThe University of Tokushima

Principal Investigator

TAKEDA Noriaki  University of Tokushima, School of Medicine, Professor, 医学部, 教授 (30206982)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Keywordsvisual vertigo syndrome / body sway / optical flow / visual dependency / optical flow刺激 / optical flow 刺激 / Visual Vertigo Syndrome / めまい / 平衡訓練
Research Abstract

We examined 15 patients with visual vertigo syndrome (VVS). VVS was diagnosed as having dizziness or imbalance triggered by the specific visual environments. There were 9 men and 6 women and their mean age was 43 years, range 25 to 69. The visual environments consisted of looking at TV or computer display (5 patients), driving car in the tunnel (4 patients), walking in supermarkets (4 patients) and walking through a crowd (2 patients). These findings indicate that the specific visual environments containing optical flow induced dizziness in VVS patients. Therefore, it is suggested that visual dependency on body sway is increased in VVS patients. We then developed a new device to produce optical flow stimulation to evaluate visual dependency on body sway. The ratio between sway path with eyes closed and eyes open is called the, Romberg ratio, which showed static visual dependency on, body sway. The Romberg ratio was increased in both healthy volunteers and VVS patients. On the other hand, the ratio between sway path with and without optical flow stimulation showed dynamic visual dependency on body sway. The ratio was markedly increased in some VVS patients, but not in other VVS patients and healthy volunteers. These findings suggested that the increased dynamic visual dependency on body sway is an important mechanism of the development of VVS

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Nishiike S, et al.: "Magnetic cortical responses evoked by visual linear forward acceleration"NeuroReport. 3. 1805-1808 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Akizuki H, et al.: "Visual-vestibular conflict induced by virtual reality"Neurosci.Lett.. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田村公一, 他: "Visual vertigo syndromeの臨床的検討"日本耳鼻咽喉科学会雑誌. 104. 406 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田村公一: "Visual vertigo syndrome"耳鼻咽喉科臨床プラクティス:EMBに基づくめまいの診断と治療(武田憲昭、編)文光堂,東京. 6. 213 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nishiike S, et al.: "Magnetic cortical responses evoked by visual linear forward acceleration"NeuroReport. 3. 1805-1808 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Akizuki H, et al.: "Visual-vestibular conflict induced by virtual reality"Neurosci.Lett. (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tamura K, et al.: "Visual vertigo syndrome"Journal of Otolaryngology of Japan. 104-4. 406 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tamura K.: "Visual vertigo syndrome"Practical Otolaryngology : Treatment of vertigo based on Evidence based medicine(EBM) (Noriaki Takeda ed) (Kobundo Tokyo). 6. 213 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nishiike S, et al.: "Magnetic cortical responses evoked by visual linear forward acceleration"NeuroReport. 3. 1805-1808 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Akizuki H, et al.: "visual-vestibular conflict induced by virtual reality"Neurosci. Lett.. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田村公一, 他: "Visual vertigo syndromeの臨床的検討"日本耳鼻咽喉科学会雑誌. 104・4. 406 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田村公一: "Visual vertigo syndrome"耳鼻咽喉科臨床プラクテイス:EMBに基づくめまいの診断と治療(武田憲昭、編), 光堂,東京. 6. 213 (2001)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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