摘要
从体表采集吞咽肌群的肌电信号可以为吞咽功能评估、吞咽障碍诊断及其康复治疗提供重要的电生理信息。目前利用体表肌电信号针对吞咽生理的临床研究通常只采用了少量电极(2～4个),难以从空间分布角度进行分析。为此,本文提出一种高密度肌电技术,通过颈前区域覆盖的电极阵列,同步采集96通道肌电信号进行分析。通过分析连续时间窗口内96通道的均方根值,建立一系列动态二维肌电电势图,实现了吞咽肌电信息的可视化。本研究招募了5名正常受试者参与实验,研究结果表明:正常受试者的动态肌电电势图模型可以反映正常吞咽过程中相关肌群的电生理活动的分布。这些初步结果验证了本方法可以为吞咽肌群活动提供可靠的动态描述信息,也可以作为吞咽障碍临床评估的辅助手段。
This study aims to develop a new approach to visualize the global myoelectric activities related to normal swallowing in human. The high-density surface electromyography (sEMG) signals were recorded by a two-dimensional (2D) 96-electrodes array on the neck region while subjects were performing specified swallowing tasks. The root mean square (RMS) of the sEMG signals was calculated for the 96 channels to construct 2D sEMG maps of the muscle activities. Along the swallowing process, a series of 2D color sEMG maps were concatenated as a dynamic topographical video of swallowing. The dynamic high-density sEMG maps provided the spatial and temporal properties of the electrical muscle activity and presented the muscle contraction coordination which was closely related to the swallowing function. The exeprimental results of this pilot study from five normal subjects show that their sEMG maps represent the consistent patterns in the distribution of muscle activities along with a swallowing process. This might suggest that the dynamic swallowing sEMG maps would be a noninvasive means for visualizing swallowing process and evaluating swallowing function.
出处
《集成技术》
2013年第4期39-43,共5页
Journal of Integration Technology
基金
国家自然科学青年基金(#61203209)
关键词
吞咽障碍
高密度肌电
肌电电势图
swallowing disorders
high-density surface electromyography (sEMG)
sEMG maps
