基于运动神经元激励的表面肌电信号仿真研究

被引:1
作者
李强
杨基海
褚雪忠
陈香
张旭
机构
[1] 中国科学技术大学电子科学与技术系
关键词
表面肌电信号; 运动单位; 激励; 模型;
D O I
暂无
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
以单纤维动作电位的仿真为基础,结合运动单位的生理结构特点,利用神经肌肉系统激励与运动单位募集、发放间的近似关系,建立一个比较符合生理学特性的表面肌电(sEMG)信号模型,以仿真不同激励情况的sEMG信号。仿真实验发现,肌纤维与电极间距离的增加将使皮肤表面检测到的动作电位峰值下降;随着激励水平的提高,与仿真sEMG信号相关的收缩力逐渐增大,且仿真sEMG信号的时域波形以及频谱也与真实sEMG信号相似。实验结果表明仿真sEMG信号能够较有效地逼近真实sEMG信号,可用于运动单位发放检测等相关研究领域。
引用
收藏
页码:342 / 347+351 +351
页数:7
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