Influences of the visual perturbation upon body stability

视觉扰动对身体稳定性的影响

• 批准号: 08671955
• 负责人: WATANABE Yukio
• 金额: $ 1.28万
• 依托单位: TOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08671955/
• 关键词: Body balance disorder; dynamic posture control; visual perturbation; unilateral vestibular disorder; frequency analysis; 姿勢制御; 視覚前庭経相互関与; 立ち直り反射; 前庭脊髄反射

In patients with vestibular disorders the body stability is influenced by visual conditions. The body sway might increase not only by complete loss of the visual information but also by the visual perturbation such as unpredictable pass of a car just beside a patient. In this research we investigated about the influence of the visual perturbation upon the static and dynamic body balance. Constant velocity optokinetic stimulation, the visual targets of which were a stripe pattern and a random dot pattern, were used as visual perturbation in this study.The results is summarized as follows :1. The unsteadiness caused by the visual perturbation was almost same as the body stability under the eyes closed condition. The stronger stimulation to the peripheral visual field more influenced to the body stability, i.e.the unsteadiness increased.2. Becaouse the body balance of some patients with unilateral vestibular disorders more affected by the visual perturbation, it should be necessary to guide to protect from unpredictable fall in daily life.3. Altough difference of strength between the left and righ foot, which indicated velocity until to get recovery after the unbalance caused by the perturbation, was observed half of healthy volunteers, there was no directional specificity by the optokinetic stimulation.

在前庭障碍患者中，身体稳定性受到视觉条件的影响。身体摇摆不仅可能由于视觉信息的完全丢失而增加，而且可能由于视觉扰动而增加，例如汽车就在患者旁边不可预测地经过。本研究探讨了视觉扰动对静态和动态身体平衡的影响。本研究采用恒定速度视动刺激作为视觉扰动，视动刺激的视觉目标为条纹图案和随机点图案。视觉扰动引起的不稳定性与闭眼状态下的身体稳定性基本一致。对周边视野的刺激越强，对身体稳定性的影响越大，即不稳定性增加.由于部分单侧前庭障碍患者的身体平衡受视觉干扰的影响较大，在日常生活中应给予指导，防止意外跌倒.虽然有半数健康志愿者左右足的力量存在差异，表明在扰动引起的不平衡后恢复到原来的速度，但视动刺激无方向特异性。

项目成果

Masatsugu Asai: "The effects of vestibular rehabilitation on postural control." Acta Otolaryngol(Stockh). Suppl.528. 116-120 (1997)

Masatsugu Asai：“前庭康复对姿势控制的影响。”

Yukio Watanabe: "Physio-pathology of vertigo (in Japanese)" Medicina. 34 (7). 1312-1315 (1997)

Yukio Watanabe：“眩晕的生理病理学（日语）”医学。

渡辺行雄: "耳鼻咽喉科・頭頸部外科 クリニカルトレンド" 中山書店, 296 (1998)

渡边幸雄：“耳鼻喉科/头颈外科的临床趋势”中山书店，296（1998）

中川肇、清水勝利、渡辺行雄、古瀬正浩、袋谷賢吉: "身体動揺に及ぼす視覚外乱の影響について" 信学技報. MBE96-18. 121-126 (1996)

Hajime Nakakawa、Masaru Shimizu、Yukio Watanabe、Masahiro Furuse、Kenkichi Fukurodani：“视觉障碍对身体摇摆的影响”MBE96-126（1996）。

渡辺行雄: "めまいの病態生理" Medicina. 34(7). 1312-1315 (1997)

Yukio Watanabe：“头晕的病理生理学”Medicina 34(7) (1997)。