Estimation of nerve conduction velocity using surface multielectrode.
The nerve conduction velocity (NCV) was measured by using the multichannel surface EMG technique. The subjects were 7 healthy volunteers (20-49 years). The evoked responses were recorded from the tibialis anterior muscle when electrically stimulating the common peroneal nerve. The distribution and propagation pattern of the nerve action potentials (NAPs) preceding M-waves could be obtained by the multichannel surface EMG. The NCV of the fastest nerve fibers could be estimated from the time delays of the latencies of the NAPs. The average NCV (ANCV) of active nerve fibers could be also estimated from the time delays of the peak latencies of the NAPs. In 4 of 7 normal subjects, the shortest latencies and the fastest NCVs were obtained with threshold stimulation. The mean values of the NCV and the ANCV with supramaximal stimulation in 7 normal deep peroneal nerves calculated by this method were 55.9 +/- 6.5 m/s and 43.3 +/- 3.2 m/s respectively.
Yamada
M
M
Kanagawa Rehabilitation Institute, Japan.
Kumagai
K
K
Hirayama
M
M
Uchiyama
A
A
D000328:Adult; D004566:Electrodes; D004576:Electromyography / Q000295:instrumentation*; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000294:innervation*; D009412:Nerve Fibers / Q000502:physiology; D009431:Neural Conduction / Q000502:physiology*; D010543:Peroneal Nerve / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values