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Fundamental Study of Simultaneous Antagonistic Situmilation by FES and Modeling Study of the Neuromusculoskeletal System

FES同步拮抗刺激的基础研究和神经肌肉骨骼系统的建模研究

基本信息

批准号：
04452306
负责人：
HOSHIMIYA Nozomu
金额：
$ 3.07万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

Electrical stimulation to the neuromusculoskeletal system causes nonlinear response. The purpose of this research is to make clear the response by simultaneous antagonistic stimulation in order to develop the method of improving the nonlinearity, and to have knowledge for modeling that system responding to electrical stimulation. Following results were obtained by this research.1. Experimental system for measuring the response of neuromusculoskeletal system caused by electrical stimulation was achieved. It was confirmed that steepy rising slope of Stimulus Intensity-Force characteristic of the agonist became gradual by simultaneous antagonistic stimulation. This shows that the simultaneous stimulation method is useful for controlling parapyzed extremities by functional electrical stimulation (FES). In addition to the results,2. It was suggested by the slope changes of the Intensity-Force characteristics that the muscle length affected the response of simultaneous antagonistic simulation, and the effect was not observed after eliminating the innervation. From these results, contribution of the neuromuscular system containing the spinal cord reflex to the slope change as obtained.3. A new method of making stimulation pattern, in which consecutive motion is divided into some "elemental movements" and stimulation pattern of the original mortion is made up by combining their stimulation patterns, was proposed. Validity of the method was confirmed by fundamental EMG analysis and knowledge of influence of the gravity on making stimulation pettern and on modeling the neuromusculoskeletal system was obtained.4. Stumulation pattern is finally adjusted in clinical application. In order to develop the FES system for easily modifying stimulation pattern, control command detector for FES system and modification method of stimulation pattern were studied. Those were effective and the useful knowledge for developing the practical FES system was obtained.

对神经肌肉骨骼系统的电刺激引起非线性反应。本研究的目的是为了弄清同时拮抗刺激的反应，以发展改善非线性的方法，并为系统对电刺激的反应建模提供知识。本研究取得了以下成果：1.建立了一套测量神经肌肉骨骼系统电刺激反应的实验系统。证实了同时拮抗刺激时，激动剂的刺激强度-力特性的稳定上升斜率变得平缓。这表明，同时刺激方法是有用的控制parpyzed四肢功能性电刺激（FES）。除此之外，2。强度-力特性曲线的斜率变化表明，肌肉长度对同时拮抗刺激的反应有影响，消除神经支配后，这种影响消失。从这些结果中，包含脊髓反射的神经肌肉系统对斜率变化的贡献.提出了一种新的激励模式生成方法，将连续运动分解为若干个“基本运动”，并将它们的激励模式组合起来构成原运动的激励模式。通过基本的肌电分析，验证了该方法的有效性，并获得了重力对神经肌肉骨骼系统建模和刺激模式制作的影响.在临床应用中最终调整了吻合方式。为了开发易于修改刺激模式的FES系统，研究了FES系统的控制命令检测器和刺激模式的修改方法。这些工作是有效的，为开发实用的FES系统提供了有用的知识。