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

身体摇摆视觉依赖性测试及其在平衡康复中的应用

• 批准号: 13671782
• 负责人: TAKEDA Noriaki
• 金额: $ 0.32万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13671782/
• 关键词: visual 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

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

我们检查了15例视觉眩晕综合征（VVS）患者。 VV被诊断为特定视觉环境触发的头晕或失衡。有9名男性和6名女性，平均年龄为43岁，范围为25至69岁。视觉环境包括看电视或计算机展示（5例患者），在隧道中驾驶汽车（4例患者），在超市（4例患者）中行走并走过人群（2名患者）。这些发现表明，包含光流的特定视觉环境在VVS患者中引起了头晕。因此，建议VVS患者的视觉依赖对人体摇摆的依赖性增加。然后，我们开发了一种新设备来产生光流刺激，以评估对人体摇摆的视觉依赖性。旋转路径与眼睛闭合和睁开眼睛之间的比例称为Romberg比率，Romberg比率显示出静态视觉依赖性，身体摇摆。在健康的志愿者和VVS患者中，Romberg的比例均增加。另一方面，带有和没有光流刺激的摇摆路径之间的比率显示出动态的视觉依赖性对人体摇摆。一些VVS患者的比率显着提高，但在其他VVS患者和健康志愿者中没有增加。这些发现表明，增加的动态视觉依赖性对人体摇摆是VVS发展的重要机制

项目成果

Tamura K.: "Visual vertigo syndrome"Practical Otolaryngology : Treatment of vertigo based on Evidence based medicine(EBM) (Noriaki Takeda ed) (Kobundo Tokyo). 6. 213 (2001)

Tamura K.：“视觉眩晕综合症”实用耳鼻喉科：基于循证医学（EBM）的眩晕治疗（武田则明主编）（东京Kobundo）。

Tamura K, et al.: "Visual vertigo syndrome"Journal of Otolaryngology of Japan. 104-4. 406 (2001)

Tamura K等人：“视觉眩晕综合症”日本耳鼻喉科杂志。

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

Nishiike S 等人：“视觉线性向前加速引起的磁皮质反应”NeuroReport。