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本文使用标准同芯针肌电图(EMG),研究了轻随意收缩时运动单位(MU)的发放频率与被激活的MU 数目间的关系。用正常肌肉与神经源性病变和肌病的肌肉做了对照。方法:受试者中,健康人的肱二头肌15例(男,21～39岁);有麻痹的肱二头肌25例(男,20～40岁),其中神经源性病变15例,肌病10例。由病史、临床过程、放射线、实验室检查、神经与肌肉活检、神经电图、EMG 等资料明确诊断。使用MED-3000型肌电图仪,记录和评价各个MU 活动的1 s 电位信号。通过该机的计算机数字信号识别和运算
In this paper, we used a standard intraocular EMG to study the relationship between the frequency of motoneurons (MU) and the number of MU activated when light contractions. Contrasted with normal muscle and muscle of neurogenic and myopathy. Methods: Among the subjects, healthy subjects had 15 biceps (male, 21-39 years old), 25 paralyzed biceps (male, 20-40 years old), 15 neurogenic lesions , Myopathy in 10 cases. By history, clinical process, radiation, laboratory tests, nerve and muscle biopsy, neuroelectrogram, EMG and other data clear diagnosis. The MED-3000 electromyograph was used to record and evaluate the 1 s potential signal for each MU activity. Through the machine’s computer digital signal recognition and computing