de Medeiros J L, Nobrega J A, de Andrade L A, Juliano Y
Clinical Neurophysiology Laboratory, Federal University of São Paulo--Escola Paulista de Medicina, Brasil.
Arq Neuropsiquiatr. 1996 Sep;54(3):393-6. doi: 10.1590/s0004-282x1996000300005.
Twenty normal individuals were submitted to facial nerve electroneurography using different techniques in order to determine the most accurate to obtain the latencies and amplitudes of the compound muscle action potentials (CMAP) of the facial muscles. First of all it was determined in which muscle or muscle group highest amplitude CMAP could be recorded with the lowest variability between sides and in test-retest. Different techniques were studied in order to determine which could give the best results. This was shown to be an arrangement of bipolar surface electrodes fixed to a plastic bar. The records with higher amplitude where obtained from the nasolabial fold muscles. Therefore 65 normal volunteers were examined using this technique and recording the potentials obtained over the nasolabial fold muscles. Normal values were determined (latency lower than 4.5 ms and amplitude larger than 2 mV--95% confidence limits).
选取20名正常个体，运用不同技术进行面神经电神经图检查，以确定获取面部肌肉复合肌肉动作电位（CMAP）潜伏期和波幅的最准确方法。首先，确定在哪块肌肉或肌肉群中能记录到最高波幅的CMAP，且两侧间及重测时的变异性最小。研究了不同技术，以确定哪种技术能产生最佳结果。结果表明，固定在塑料棒上的双极表面电极的一种布置方式效果最佳。从鼻唇沟肌肉获得了波幅更高的记录。因此，使用该技术对65名正常志愿者进行了检查，并记录鼻唇沟肌肉上获得的电位。确定了正常值（潜伏期低于4.5毫秒，波幅大于2毫伏——95%置信限）。
