Z'graggen Werner J, Trautmann Joël P, Boërio Delphine, Bostock Hugh
Department of Neurosurgery, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse 10, 3010 Bern, Switzerland.
Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
Muscle Nerve. 2016 Feb;53(2):205-8. doi: 10.1002/mus.24726. Epub 2015 Jul 2.
Recording of muscle velocity recovery cycles (MVRCs) has been developed as a technique to investigate the pathophysiology of muscle diseases. MVRCs have been measured by direct muscle stimulation and concentric electromyographic needle recording. This study was undertaken to determine whether recordings can be made with surface electrodes.
MVRCs with 1 and 2 conditioning stimuli were recorded simultaneously with concentric needle and surface electrodes from the brachioradialis muscle in 12 healthy volunteers. Muscle relative refractory period, early and late supernormality, and extra-late supernormality were compared between the recording techniques.
Surface recordings were possible in all subjects. The multifiber action potentials recorded with surface electrodes were smaller than those recorded with needles, but there was no significant difference between any of their MVRC properties.
MVRCs can be recorded with surface electrodes in healthy subjects. The use of surface electrodes may facilitate the technique of recording MVRCs.
肌肉速度恢复周期（MVRCs）的记录已发展成为一种研究肌肉疾病病理生理学的技术。MVRCs已通过直接肌肉刺激和同心针肌电图记录进行测量。本研究旨在确定是否可以使用表面电极进行记录。
在12名健康志愿者中，使用同心针电极和表面电极同时记录肱桡肌在1次和2次条件刺激下的MVRCs。比较两种记录技术的肌肉相对不应期、早期和晚期超常期以及超晚期超常期。
所有受试者均能进行表面记录。表面电极记录的多纤维动作电位小于针电极记录的，但它们的任何MVRC特性之间均无显著差异。
健康受试者中可以使用表面电极记录MVRCs。表面电极的使用可能会促进MVRCs的记录技术。
