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F 波是逆向激活了运动神经元而出现的晚期反应。可用 F 波诊断外周和中枢神经系统疾病。一般的神经传导速度的检查方法只能检查外周神经的远侧段,而 F 波可以检查神经近侧段的潜伏期。本文作者检查了33名完全性贝耳氏面瘫患者和30名正常人。使用 DISA 1500型肌电仪,用超强刺激茎乳孔处的面神经,刺激时限为0.2毫秒,记录用的表面电极放在口轮匝肌和眼轮匝肌处,从开始电刺激至开始出现诱发波的时间为 M
F-waves are late reactions that occur when motor neurons are activated inversely. Available F wave diagnosis of peripheral and central nervous system diseases. The general method of examination of nerve conduction velocity can only check the distal segment of the peripheral nerve, and F wave can check the latency of the proximal segment of the nerve. The authors examined 33 patients with complete Bell’s facial paralysis and 30 normal subjects. The DISA 1500 electromyograph was used to stimulate the facial nerve at the stylomastoid foramina with a stimulation duration of 0.2 milliseconds. The recording surface electrodes were placed on the orbicularis oculi muscle and the orbicularis oculi muscle. From the start of electrical stimulation to the onset Induced wave of time M