[An inquiry on the normal value of Chinese' ENoG and the influencing factors].
The normal value of the ENoG of 172 facial nerves from 86 Chinese has been estimated with the method of regulating the strength of stimulating current. It showed that the CAPs of the Chinese' ENoG were of normal distribution. The mean of ampitudes was 3.94 +/- 1.02 mV. The coefficient of variation was 25.8%; The mean of latencies was 3.18 +/- 0.42 ms. The coefficient of variation was 13.2%. The variance from age to age, sex to sex and side to side were not significant. It was concluded that the interpretation of ENoG should be based on the fact that the CAP obtained from one certain subject was symmetrical between the opposite sides. The effecting factors which influenced the ENoG of normal facial nerve were also discussed in this paper.
Liu
Y
Y
Affiliated Hospital of Shandong Medical University, China.
Liu
D
D
Peng
H
H
D000200:Action Potentials; D000328:Adult; D000367:Age Factors; D002681:China; D004558:Electric Stimulation; D005152:Facial Muscles / Q000502:physiology; D005154:Facial Nerve / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012737:Sex Factors