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会引起非线性响应。本研究的目的是明确同时对抗性刺激的响应，以开发改善非线性的方法，并获得对电刺激响应的系统进行建模的知识。本研究得到以下结果： 1．实现了测量电刺激引起的神经肌肉骨骼系统反应的实验系统。证实了激动剂的刺激强度-力特性的陡峭上升斜率通过同时拮抗刺激而变得平缓。这表明同步刺激方法可用于通过功能性电刺激（FES）控制瘫痪四肢。除了结果之外，2。强度-力特征的斜率变化表明，肌肉长度影响同时对抗模拟的反应，而消除神经支配后没有观察到这种影响。从这些结果中，获得了包含脊髓反射的神经肌肉系统对斜率变化的贡献。3．提出了一种新的刺激模式制作方法，将连续运动分解为若干“基本运动”，将它们的刺激模式组合起来构成原始运动的刺激模式。通过基本的肌电图分析证实了该方法的有效性，并获得了重力对刺激模式的影响以及对神经肌肉骨骼系统建模的影响的知识。 4．临床应用中最终调整刺激方式。为了开发易于修改刺激模式的FES系统，对FES系统的控制命令检测器和刺激模式的修改方法进行了研究。这些都是有效的，并获得了开发实用的 FES 系统的有用知识。