OPTIMAL CONDITIONS FOR THE MEASUREMENT OF MUSCLE-FIBER CONDUCTION-VELOCITY USING SURFACE ELECTRODE ARRAYS
OPTIMAL CONDITIONS FOR THE MEASUREMENT OF MUSCLE-FIBER CONDUCTION-VELOCITY USING SURFACE ELECTRODE ARRAYS
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DOI：
10.1007/bf02441587
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发表时间：
1985-01-01
影响因子：
3.2
通讯作者：
MIYANO, H
中科院分区：
文献类型：
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作者：
SADOYAMA, T;MASUDA, T;MIYANO, H
研究了影响肌纤维传导速度估计准确性的三个因素。它们是记录位置、电极间距离和电极相对于肌纤维的未对准。在正常受试者的二头肌上进行实验。从由13个触点组成的线性电极阵列同时进行双极记录。用互相关法评价传导速度的准确性。当记录点靠近神经支配区时，互相关函数的峰值降低，时间延迟的估计变得不可靠。当电极间距离较小时，获得了较高的相关性。此外，电极轴与肌纤维轴之间的不对准导致肌纤维传导速度的高估，但如果使用更宽的电极，这种影响较小。
Three factors influencing the accuracy of the muscle fibre conduction velocity estimates were studied. They were the recording position, the interelectrode distance and the misalignment of the electrode with respect to the muscle fibres. Experiments were performed on the biceps muscle of a normal subject. Bipolar recordings were made simultaneously from a linear electrode array consisting of 13 contacts. The accuracy of the conduction velocity was evaluated by the cross-correlation method. When the recording site was close to the innervation zone, the peak values of the cross-correlation function decreased and the estimates of the time delays became unreliable. High correlations were obtained when the interelectrode distance was small. Furthermore, the misalignment between electrode axis and muscle fibre axis led to overestimation of muscle fibre conduction velocity, but this effect was less if wider electrodes were used.