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由于肌萎缩性侧索硬化(ALS)在发展速度和疾病过程的局部表现上有着极大差异,因此有的病例在诊断上仍存在一定困难,然借助肌电图检查有可能得到确诊,同时还可了解下运动神经原的功能。检查范围从颈、胸和腰骶部椎旁肌肉、肩和骨盆带、整个四肢以及第Ⅴ、Ⅶ、Ⅺ和Ⅻ脑神经所支配的肌肉,从这些部位记录出它的异常肌电图象。一般ALS 的特征性的肌电图异常包括:①束颤和纤颤电位,②大型运动单位电位(“巨大”
Because of the vast differences in the rate of ALS development and the local performance of the disease process, there are still some difficulties in the diagnosis of ALS, which may be confirmed by electromyography Understand the function of lower motor neurons. The examination ranged from the paramaxillary muscles of the neck, thorax and lumbosacral region, the shoulder and pelvis, the entire extremity, and the muscles of the â ... ¢ â ..., â ... ¡, â ... ¢ and â ... ¡brain, from which abnormal EMG images were recorded. The typical EMS abnormalities of ALS include: ① Beam fibrillation and fibrillation potentials, ② Large motor unit potentials (“huge”