Normative value of motor unit action potential of trapezius electromyography in adult
10.3760/cma.j.issn.1006-7876.2010.11.003
- VernacularTitle:斜方肌肌电图运动单位动作电位成人正常参考值的建立
- Author:
Juyang ZHENG
;
Dongsheng FAN
- Publication Type:Journal Article
- Keywords:
Muscle,skeletal;
Shoulder;
Electromyography;
Action potentials;
Accessorynerve;
Reference values
- From:
Chinese Journal of Neurology
2010;43(11):750-751
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the normative value of motor unit action potential of trapezius electromyography(EMG)and the amplitude of compound muscle action potential(CMAP)of accessory nerve.Methods Standard EMG and CMAP of accessory nerve were recorded from upper trapezius muscle in 100 healthy volunteers.For accessory nerve,it was stimulated in the upper sternocleidomastoid muscle and was recorded in the junction of the neck and shoulder.For trapezius EMG,it was recorded also in the junction of the neck and shoulder,includiag spontaneous activity,motor unit action potential and recruitment pattern.Results The amplitude,duration,polyphasic wave of motor unit action potential was(610.7±79.2)μV,(11.2±1.5)ms,(11.7±1.2)% respectively.The amplitude of compound muscle action potential of accessory nerve was(8.7±2.3)mV.Conclusion The electromyography of trapezius and CMAP of accessory nerve can be examined accurately.
