Hopf H C
MMW Munch Med Wochenschr. 1977 Jul 8;119(27):919-22.
Electromyography reflects the anatomical situation in the muscle parenchyma. Changes in the anatomical structure are present if the normal potential form breaks up into small amplitude or even polyphasic potentials (myopathy type) or increases into high amplitude, broad and coarsely fragmented potentials (chronic neuropathy with regeneration). The caliber and type of muscle fibers are expressed in the speed of conduction. Spontaneous activity suggests an increased excitability of the muscel fibers. Disturbances of neuromuscular transmission are detectable by direct stimulation of the muscle. Analysis of nerve conductivity permits the demonstration of diffuse (polyneuropathy type) or circumscribed (entrapment neuropathy type) nerve affections. The recording of the parameters mentioned is the domain of EMG.
肌电图反映肌肉实质内的解剖学状况。如果正常电位形态分解为小振幅甚至多相电位（肌病类型），或者增大为高振幅、宽且粗糙碎裂的电位（伴有再生的慢性神经病），则表明解剖结构发生了变化。肌肉纤维的直径和类型通过传导速度体现。自发活动提示肌肉纤维兴奋性增加。通过直接刺激肌肉可检测到神经肌肉传递障碍。分析神经传导性可显示弥漫性（多发性神经病类型）或局限性（卡压性神经病类型）神经病变。记录上述参数属于肌电图的范畴。
