1.Objective:The purpose of the investigation was to try to explore the value of electromyography (EMG),motor nerve conductive velocity(MCV) and motor nerve latency(ML) in the diagnosis of Guillain-Barre Syndrome(GBS).
2.Nerve conduction velocity (NCV), motor nerve end latency (Lat) and motor nerve potential amplitude were 35.7-41.6 m/s, 1.31-1.51 m/s and 0.50-0.71 mV, respectively.
3.The peroneal motor conductionvelocity (MCV), distal potential latency(DPL), amplitude and duration of the compound muscle action potential(CMAP) were determined in the be groups.
4.Results:In the 126 motor nerves examined ,prolongation of the distal latency was found in 53.2%,reduction of MVC in 70.6%,F waves abnomality was noted in 92.0%,reduction of SCV in 64.0%,EMG revealed neurogenic changes in 68.4%.
6.Results: In the 78 motor nerves examined,reduction of MCV was found in 44.8% of upper and lower limbs,prolongation of the distal latency in 24.3%,reduction of SCV in 38.1%,F waves abnormality in 89.3%,and the neurogenic changes revealed by EMG were found in 64.5%.
7.Methods To record the latency and amplitude of diaphragmatic compound muscle action potential(DCMAP) from 37 ALS patients and 31 control subjects with surface electrodes after transcranial and transcervical magnetic stimulation, central motor conduction time(CMCT) was calculated.
