Eisen A, Schomer D, Melmed C
Can J Neurol Sci. 1977 May;4(2):117-23.
The propagation velocities and conduction times of nerve impulses responsible for muscle F-waves were measured in the proximal segments of 60 normal posterior tibial nerves and of 41 normal peroneal nerves. The results were compared with those of 25 patients having confirmed lumbosacral root compression due to disc degeneration. Using the peroneal nerve, 65 per cent of patients had a prolonged proximal conduction time; a similar abnormality was found in 56 per cent of patients when the posterior tibial nerve was studied. The yield of positive results rose to 85 per cent and 76 per cent respectively when the M- and F-latencies in given individuals were compared. It was also shown that in normal subjects the F-response has a longer latency, and slower conduction velocity than the H-reflex when both are obtained using the same stimulating and recording sites. In patients in whom the ankle jerks and H-reflexes are absent, the F-waves may still be recorded indicating that the latter are mediated through motor fibers.
在60条正常胫后神经和41条正常腓总神经的近端节段，测量了引起肌肉F波的神经冲动的传导速度和传导时间。将结果与25例因椎间盘退变确诊为腰骶神经根受压的患者的结果进行比较。研究腓总神经时，65%的患者近端传导时间延长；研究胫后神经时，56%的患者有类似异常。当比较个体的M波和F波潜伏期时，阳性结果的检出率分别升至85%和76%。还表明，在正常受试者中，当使用相同的刺激和记录部位同时获得F反应和H反射时，F反应的潜伏期更长，传导速度比H反射慢。在踝反射和H反射消失的患者中，仍可记录到F波，这表明F波是通过运动纤维介导的。
