Hallett M
J Neurol Neurosurg Psychiatry. 1979 Mar;42(3):232-7. doi: 10.1136/jnnp.42.3.232.
Patients with amyotrophic lateral sclerosis made stereotyped 20 degrees elbow flexion movements as rapidly as possible while surface EMG was recorded from biceps and triceps. The characteristic ballistic movement EMG pattern could be recognised in almost all the patients. The first agonist burst and the first antagonist burst, which are normally limited in duration, were prolonged in patients with clinical signs of pyramidal tract disease or alpha motor neurone disease or both. Prolongation of these components permits the muscles to generate sufficient forces to accomplish the movements.
肌萎缩侧索硬化症患者尽可能快速地进行刻板的20度肘部屈曲运动，同时从肱二头肌和肱三头肌记录表面肌电图。几乎所有患者都能识别出典型的弹道运动肌电图模式。在患有锥体束疾病或α运动神经元疾病或两者都有临床体征的患者中，通常持续时间有限的首次主动肌爆发和首次拮抗肌爆发会延长。这些成分的延长使肌肉能够产生足够的力量来完成运动。
