参考文献：肉跳

Albrecht E , Kuntzer T . Number of Edb motor units estimated using an adapted multiplepoint stimulation method : normal values and longitudinal studies in ALS and peripheral neuropathies .Changes in motor unit numbers in patients with ALS : a longitudinal study using the adapted multiple point stimulation method .Olney R , Yuen E , Engstrom J . The rate of change in motor unit number estimates predicts survival in patients with amyotrophic lateral sclerosis .