Hayward M, Willison R G
J Neurol Sci. 1977 Sep;33(3):415-23. doi: 10.1016/0022-510x(77)90137-x.
The technique of automatic analysis of the electromyogram has been applied to patients with chronic partial denervation due to a wide variety of causes. Elevation of the mean amplitude more than 2 SD above the control group mean without significant change in the mean turns count was a consistent index of chronic partial denervation. The degree of elevation was linked to the severity of the weakness in motor neurone disease. Elevation of mean amplitude of comparable degree was found in patients with motor neuropathies of long duration. The elevation of mean amplitude is considered to be due to increase in the density of muscle fibres in the motor units due to reinnervation.
肌电图自动分析技术已应用于因多种原因导致慢性部分失神经支配的患者。平均波幅高于对照组均值2个标准差以上且平均转折数无显著变化是慢性部分失神经支配的一致指标。波幅升高程度与运动神经元病的肌无力严重程度相关。在病程较长的运动神经病患者中也发现了类似程度的平均波幅升高。平均波幅升高被认为是由于再支配导致运动单位中肌纤维密度增加所致。
