An electrophysiological study of resonant frequency in human spinal motor neurons

VernacularTitle:脊髓运动神经元谐振频率的电生理分析
Author: Wentong ZHANG ; Guangxu XU ; Hongxing WANG ; Wenhong CHEN ; Mei DU ; Lin LI
Publication Type:Journal Article
Keywords: Vibration; Spinal motor neurons; Resonance; F-waves
From: Chinese Journal of Physical Medicine and Rehabilitation 2013;(5):348-350
CountryChina
Language:Chinese
Abstract: Objective To explore the resonant frequencies of human spinal motor neurons.Methods Twenty healthy college students were recruited as the subjects.Each was put in a supine position and administered vibratory stimulation at 20 Hz,30 Hz,40 Hz,50 Hz and 60 Hz on the left distal fibula just above the lateral malleolus for 5 minutes.M-waves and F-waves were recorded before each intervention.F-waves were also recorded immediately after each intervention.Results The F-wave amplitude and the F/Mmax ratio after the 30 Hz stimulation were significantly larger than those at baseline and after stimulation at 50 or 60 Hz.However,20 Hz,30 Hz and 40 Hz stimulation produced no significantly different F-wave amplitudes or F/Mmax.Conclusion Human spinal motor neurons may have a resonant frequency around 30 Hz.