Conclusion Neurogenic changes of EMG of rectus abdominis muscle might be regarded as an evidence of the lesion in lower motor neuron involved in thoracic region and is helpful in the diagnosis of ALS.

• 结论腹直肌肌电图各参数均能可靠、稳定地测出,可作为检测ALS患者胸段下运动神经元病变的辅助手段。