A basic study of new sensory feedback system for postural control by use of a mixed reality technology

利用混合现实技术进行姿势控制的新型感觉反馈系统的基础研究

基本信息

批准号：
17603001
负责人：
TANAKA Toshiaki
金额：
$ 2.24万
依托单位：
Sapporo City University (2006)Sapporo Medical University (2005)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

[PURPOSE] The purpose of this study was to analyze the effects of the vibratory feedback system between the force plate and vibratory stimulation for maintaining good standing balance. [METHODS] The young adult and the elderly were participated in the experiment. All subjects were independent in their activities of daily living. The vibratory feedback system has three units, vibratory device unit, and force plate unit, feedback control unit. The vibratory device unit was composed of eight vibrators with sponge foot mats and the belt at their waist, respectively.. The system needs the feedback for the subjects to inform from of their condition of standing balance. The force plate unit recorded the center of pressure (COP) data in real time. The feedback control unit was activated if the trajectory of the COP reaches a position of forefeet, which has been determined by the examiner, the vibrators under the forefeet and their waist. The prospective target position was defined as 50 % and 110 % of the maximal displacement of the COP in each subject, which was obtained from the modified Cross-test. The subjects stood on the force plate for 7 seconds as the start position and then they tried to reach the target position in each direction for 6 seconds and finally maintain at the maximal position for 7 seconds. [RESULT] The accuracy of the COP movement to the vibratory presentation distance showed a high accuracy that exceeded 80% in the subjects. It means that this vibratory stimulation seems effective as providing posture information. [CONCLUSION] The results suggest that the vibratory feedback may positively affect postural balance within the base of support. It might be hypothesized that this system may be able to help in the control of body sway as a special device for balance training or postural stability awareness attention.

[目的]本研究的目的是分析力板和振动刺激之间的振动反馈系统的影响，以保持良好的平衡。 [方法]年轻人和老年人参加了实验。所有受试者在日常生活中都是独立的。振动反馈系统具有三个单元，振动设备单元和力板单元，反馈控制单元。振动设备单元由八个带有海绵脚垫和皮带的振动器组成。系统需要对受试者的反馈，以便从他们的站立平衡状况中告知。力板单元实时记录压力中心（COP）数据。如果COP的轨迹达到前面的位置，请激活反馈控制单元，该位置由审查员确定，前表面下方的振动器及其腰部确定。前瞻性目标位置定义为每个受试者中COP最大位移的50％和110％，这是从修改后的跨测试中获得的。作为开始位置，受试者站在力板上7秒钟，然后试图在每个方向上达到目标位置6秒，最后在最大位置保持7秒。 [结果] COP移动到振动呈现距离的准确性表明，受试者的高精度超过80％。这意味着这种振动刺激似乎有效地提供了姿势信息。 [结论]结果表明，振动反馈可能会积极影响支撑底部内的姿势平衡。可以假设该系统可能能够帮助控制身体摇摆，作为平衡训练或姿势稳定意识的特殊设备。