肌电图 (EMG)是检测上、下运动神经元、周围神经、神经肌肉接头以及肌肉整个运动系统功能的一种重要的临床电生理学方法。传统 EMG采用同心圆针或单极针电极 ,主要研究运动单位(MU)内一定数量的、一组肌纤维动作电位 (AP)的时空关系 ;而单纤维肌电图(SFEMG)采用特殊的单纤维针 Electromyography (EMG) is an important clinical electrophysiological method that detects the function of the upper and lower motor neurons, peripheral nerves, neuromuscular junctions and the whole motor system of the muscle. The traditional EMG uses concentric needles or unipolar electrodes to study the spatial-temporal relationship of a certain number of groups of muscle fiber action potentials (APs) in a motor unit (MU); while the single fiber electromyography (SFEMG) uses a special single fiber needle