基于R?ssler混沌模型的神经电刺激系统的设计与实验研究  

Design and experimental research of an electrical nerve stimulation system based on R?ssler chaotic model

作　　者：郑金存 聂国朝[3] 刘永建[2] 龙佳佳[4] 张慧[5] 伍春华[3] 

机构地区：[1]玉林师范学院电子与通信工程学院,广西玉林537000 [2]玉林师范学院广西高校复杂系统优化与大数据处理重点实验室,广西玉林537000 [3]玉林师范学院纳米医药中心,广西玉林537000 [4]广西壮族自治区民族医院康复医学科,广西南宁530001 [5]玉林师范学院生命科学与技术学院,广西玉林537000

出　　处：《中国医学物理学杂志》2017年第11期1142-1149,共8页Chinese Journal of Medical Physics

基　　金：国家自然科学基金(81660508);广西高校复杂系统优化与大数据处理重点实验室开放基金(2015CSOBDP0302)

摘　　要：基于R?ssler混沌模型的神经电刺激系统的实现方法,介绍了设计原理、实现过程及测试方案。混沌信号的规则性保证了电刺激的舒适感,混沌信号的内随机性保持了电刺激的多样性,并通过变化混沌方程中的参数,获得了丰富的电刺激效果。为了探索混沌电刺激的应用优势,设计了基于机器视觉的非接触测量系统,实验结果表明混沌电刺激能使青蛙腿部保持较大的幅度持续抖动,具有潜在应用优势,而连续波与疏密波的持续刺激使青蛙腿部的抖动幅度衰减更快,这可能是由于混沌电刺激延缓了耐受的产生或者是降低了电刺激的疲劳程度。混沌模型使得电刺激的规则性与多样性得到统一,可改善当前市售电针仪所存在的一些问题,其统一的数学模型为规范当前电刺激仪的设计提供了新的方向。This report presents a new design for electrica nervel stimulation system based on R？ssler chaotic model, and describes the design principles, procedures and test methods. The result shows that the chaotic signal is an ideal signal source in the electrical nerve stimulation. The regularity of chaotic signals provides comfort for patients during treatment, and the randomness within chaotic signal maintains the diversity of the electrical stimulation. Various electrical simulation effects are achieved by varying the chaos equation parameters. In order to explore the application advantages of chaotic electric stimulation, a non-contact measurement system based on machine vision is designed. The experimental results show that the chaotic electric stimulation can make the frog leg maintain continue vibration in a large amplitude, with potential application advantages, while the periodic stimulation （continuous wave and sparse-dense wave） attenuates the jitter of the frog leg faster, which may be due to the delay in the generation of tolerance or the reduction of the fatigue level of electrical stimulation because of the chaotic electrical stimulation. Chaos model makes the rules and diversity be included in electrical stimulation procedure and improves the performance of the current commercially available electrical stimulator. The unified mathematical model provides a new direction for the standard of the current electrical stimulation parameters.

关 键 词：青蛙 Rossler混沌模型 神经电刺激 混沌应用 电刺激参数 

分 类 号：R318.6[医药卫生—生物医学工程]