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首页> 外文期刊>Journal of Neuroscience Methods >Relationship between grasping force and features of single-channel intramuscular EMG signals.
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Relationship between grasping force and features of single-channel intramuscular EMG signals.

机译：抓握力与单通道肌内肌电信号特征的关系。

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摘要

The surface electromyographic (sEMG) signal can be used for force prediction and control in prosthetic devices. Because of technological advances on implantable sensors, the use of intramuscular EMG (iEMG) is becoming a potential alternative to sEMG for the control of multiple degrees-of-freedom (DOF). An invasive system is not affected by crosstalk, typical of sEMG, and provides more stable and independent control sites. However, intramuscular recordings provide more local information because of their high selectivity, and may thus be less representative of the global muscle activity with respect to sEMG. This study investigates the capacity of selective single-channel iEMG recordings to represent the grasping force with respect to the use of sEMG with the aim of assessing if iEMG can be an effective method for proportional myoelectric control. sEMG and iEMG were recorded concurrently from 10 subjects who exerted six grasping force profiles from 0 to 25/50N. The linear correlation coefficient between features extracted from iEMG and force was approximately 0.9 and was not significantly different from the degree of correlation between sEMG and force. This result indicates that a selective iEMG recording is representative of the applied grasping force and can be used for proportional control.
机译：表面肌电图 （sEMG） 信号可用于假肢设备中的力预测和控制。由于植入式传感器的技术进步，肌内肌电图（iEMG）的使用正在成为sEMG的潜在替代品，用于控制多自由度（DOF）。侵入性系统不受串扰的影响，这是典型的 sEMG，并提供更稳定和独立的控制位点。然而，肌内记录由于其高选择性而提供了更多的局部信息，因此可能不太能代表与 sEMG 相关的整体肌肉活动。本研究调查了选择性单通道 iEMG 记录表示使用 sEMG 的抓取力的能力，旨在评估 iEMG 是否可以成为比例肌电控制的有效方法。同时记录了 10 名受试者的 sEMG 和 iEMG，他们在 0 到 25/50N 之间施加了六种抓握力曲线。从iEMG中提取的特征与力之间的线性相关系数约为0.9，与sEMG与力之间的相关性没有显著差异。该结果表明，选择性 iEMG 记录代表了施加的抓取力，可用于比例控制。

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