摘要
本实验比较观察了眼肌、口肌的EEMG。结果:眼肌EEMG的闽值比口肌EEMG的阀值恢复速度慢。说明眼肌支配神经比口肌支配神经受损伤程度重。眼肌、口肌间受损伤程度差异的现象,支持了面肌功能“部分评价系统”的合理性。
Atransient palsy of the infrastapedial lesion of the facial noire was made by clumping the nerve of guinea piqs, for 5 secs. Electro-myographic responses of both the orbicularis oculi and oris muscles evoked by direct electr ical stimulation at the suprastalpedial portion were recorded simultaneously. The clump was given by a microsurgical needle holder. Duration of the conduction block in the two muscles were measured using the threshold of the responses of boeh muscles. In 13 animals a longer conduction block was noted in the orbicularis oculi muscle compared with the orbicularis oris muscle. In 2 animals, conduction block released simultaneously in the two muscles and no paiay of both muscles was observed in 1 animal. This experimental study supported the result of the clinical investigation that the orbiculris oculi muscle branch of the intratempotral facial nerve is more vlnetable than the orbicularis oris muscle branch.
出处
《中国医科大学学报》
CAS
CSCD
1993年第1期66-67,共2页
Journal of China Medical University
关键词
口轮匝肌
眼轮匝肌
诱发肌电图
m. orLioularis oculi m. orbioularis
evokocl electiom yogram
