IEEE Trans Neural Syst Rehabil Eng. 2021;29:1110-1119. doi: 10.1109/TNSRE.2021.3086860. Epub 2021 Jun 15.
Muscle activity monitoring in dynamic conditions is a crucial need in different scenarios, ranging from sport to rehabilitation science and applied physiology. The acquisition of surface electromyographic (sEMG) signals by means of grids of electrodes (High-Density sEMG, HD-sEMG) allows obtaining relevant information on muscle function and recruitment strategies. During dynamic conditions, this possibility demands both a wearable and miniaturized acquisition system and a system of electrodes easy to wear, assuring a stable electrode-skin interface. While recent advancements have been made on the former issue, detection systems specifically designed for dynamic conditions are at best incipient. The aim of this work is to design, characterize, and test a wearable, HD-sEMG detection system based on textile technology. A 32-electrodes, 15 mm inter-electrode distance textile grid was designed and prototyped. The electrical properties of the material constituting the detection system and of the electrode-skin interface were characterized. The quality of sEMG signals was assessed in both static and dynamic contractions. The performance of the textile detection system was comparable to that of conventional systems in terms of stability of the traces, properties of the electrode-skin interface and quality of the collected sEMG signals during quasi-isometric and highly dynamic tasks.
在不同的场景中，肌肉活动监测在动态条件下是一项至关重要的需求，从运动到康复科学和应用生理学。通过电极网格（高密度表面肌电图，HD-sEMG）获取表面肌电图（sEMG）信号，可以获得有关肌肉功能和募集策略的相关信息。在动态条件下，这种可能性需要既具有可穿戴性和小型化的采集系统，又需要易于佩戴的电极系统，以确保稳定的电极-皮肤界面。虽然在前者方面已经取得了一些进展，但专门针对动态条件设计的检测系统尚处于起步阶段。本工作旨在设计、表征和测试一种基于纺织技术的可穿戴、HD-sEMG 检测系统。设计并制作了一个具有 32 个电极和 15mm 电极间距的纺织网格。对构成检测系统的材料和电极-皮肤界面的电气特性进行了表征。在静态和动态收缩过程中，评估了 sEMG 信号的质量。在准静态和高度动态任务中，纺织品检测系统的性能在迹线稳定性、电极-皮肤界面特性和采集的 sEMG 信号质量方面与传统系统相当。
