Electro-mechanical stability of surface EMG sensors
Electro-mechanical stability of surface EMG sensors
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DOI：
10.1007/s11517-007-0168-z
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发表时间：
2007-05-01
影响因子：
3.2
通讯作者：
De Luca, C. J.
中科院分区：
文献类型：
--
作者：
Roy, S. H.;De Luca, G.;De Luca, C. J.
本研究比较了不同检测条件下表面肌电（sEMG）传感器的性能，这些检测条件影响传感器及其与皮肤接触之间的机电稳定性。进行这些比较是为了更好地了解传感器设计和使用的特定特性如何改变sEMG传感器在剧烈活动条件下以高保真度检测信号的能力。研究的第一部分调查了不同检测表面轮廓和胶带对传感器保持与皮肤电接触能力的影响。研究的第二部分调查了不同的皮肤制剂和亲水性凝胶对正弦和冲击机械扰动引起的运动伪影的产生的影响。研究的两个部分均评价了传感器在干燥皮肤和潮湿皮肤（出汗）条件下的性能。我们发现，对检测表面进行轮廓化并添加更具粘性的双面胶带，对于干燥皮肤和潮湿皮肤条件，都能有效地增加中断电极与皮肤之间的电接触所需的力。机械扰动测试表明，与没有凝胶的传感器相比，施加到传感器的检测表面的亲水凝胶产生更大的运动伪影，特别是当在皮肤上存在汗液的条件下测试传感器时。表面活性剂皮肤制备的使用不影响由正弦或冲击扰动引起的运动伪影的量。这些研究结果的重要性进行了讨论，其影响，通过传感器的设计修改和程序，以提高表面肌电信号的保真度，他们与皮肤的接口。
This study compared the performance of surface electromyographic (sEMG) sensors for different detection conditions affecting the electro-mechanical stability between the sensor and its contact with the skin. These comparisons were made to gain a better understanding of how specific characteristics of sensor design and use may alter the ability of sEMG sensors to detect signals with high fidelity under conditions of vigorous activity. The first part of the study investigated the effect of different detection surface contours and adhesive tapes on the ability of the sensor to remain in electrical contact with the skin. The second part of the study investigated the effects of different skin preparations and hydrophilic gels on the production of movement artifact resulting from sinusoidal and impact mechanical perturbations. Both parts of the study evaluated sensor performance under dry skin and wet skin (from perspiration) conditions. We found that contouring the detection surface and adding a more adhesive double-sided tape were effective in increasing the forces needed to disrupt the electrical contact between the electrodes and the skin for both dry skin and wet skin conditions. The mechanical perturbation tests demonstrated that hydrophilic gel applied to the detection surface of the sensor produced greater movement artifacts compared to sensors without gel, particularly when the sensors were tested under conditions in which perspiration was present on the skin. The use of a surfactant skin preparation did not influence the amount of movement artifacts that resulted from either the sinusoidal or impact perturbations. The importance of these findings is discussed in terms of their implications for improving sEMG signal fidelity through sensor design modifications and procedures for interfacing them with the skin.