Pollak V A, Ferbert A, Cui J, Schulze-Clewing J
University of Saskatchewan, Saskatoon, Canada.
Med Prog Technol. 1992;18(4):217-25.
The paper describes a method for the estimation of the frequency of occurrence of fibers with a given conduction velocity among the stronger myelinated fibers of superficial nerves. The method is primarily suited for the examination of sensory nerves. To mixed nerves it can be applied only if interference by excited myopotentials is sufficiently weak. A single averaged recording of the compound action potential of the nerve evoked by a supra-maximal electrical stimulus serves as input. It is shown that integration of that curve with respect to time yields an amplitude weighted graph of the density of fibers with given travel times between the stimulus site and the recording electrode. Unweighting that curve yields the distribution characteristic of the travel delays which can easily be converted to a graph of the conduction velocity density of the fibers in the excited ensemble.
本文描述了一种用于估计浅表神经中具有给定传导速度的纤维在较强髓鞘化纤维中出现频率的方法。该方法主要适用于感觉神经的检查。对于混合神经，只有在兴奋肌电位的干扰足够弱时才能应用。由超强电刺激诱发的神经复合动作电位的单次平均记录作为输入。结果表明，该曲线关于时间的积分产生了一个振幅加权图，该图表示在刺激部位和记录电极之间具有给定传播时间的纤维密度。对该曲线进行去加权处理可得到传播延迟的分布特征，该特征可轻松转换为兴奋纤维群中纤维传导速度密度的图。
