Methods The fib and psw of thoracic paraspinal muscles,the motor unit potential of sternocleidomastoid muscle were detected in 50 patients who had been identified as having ALS.

• 方法 5 0例确诊的ALS患者分别行胸段脊旁肌自发电位、胸锁乳突肌运动单位 ,部分患者行舌肌自发电位检测 ;