家兔面神经核背内侧区对颏舌肌肌电活动的调制作用  

MODULATING EFFECTS OF DORSAL MEDIAL AREA OF NUCLEUS FACIALIS ON THE MYOELECTRIC ACTIVITIES OF GENIOGLOSSUS IN RABBITS

作　　者：王丽[1] 徐欣[2] 刘磊[1] 

机构地区：[1]山东医科大学生理学教研室 [2]卫生部耳鼻喉科学重点实验室

出　　处：《山东医科大学学报》2000年第3期230-232,共3页Acta Academiae Medicinae Shandong

基　　金：山东省科委科研基金资助课题 !(99B1CAA1 )

摘　　要：目的 :研究电、化学刺激面神经核背内侧区 (dMNF)对颏舌肌肌电活动的影响。方法 :在 2 4只氨基甲酸乙脂麻醉、断双侧迷走神经的健康成年家兔上进行实验。结果 :①长串电脉冲刺激dMNF导致颏舌肌肌电活动明显增强 ;②在dMNF内微量注射谷氨酸钠 ,颏舌肌肌电活动出现明显的易化效应 ;③单脉冲电刺激dMNF引起颏舌肌出现两次肌电反应 ,潜伏期分别为 (50 8±0 6 )ms和 (94 7±0 5)ms。结论 :dMNF对颏舌肌的肌电活动具有调节作用 ,dMNF的兴奋能增强颏舌肌的肌电活动 。Objective:To study the effects of electrical and chemical stimulation of the dorsal medial area of mucleus facialis(dMNF) on the myoelectric actvities of genioglossus. Methods:The study was carricd out on 24 urethane anaesthetized and vagotomized adult rabbits. Results:①Long train electrical stimulation at the dMNF facilitated the myoelectric activities of genioglossus markedly.②Microinjection of glutamate into the dMNF caused facilitatory response of the myoelectric activities of genioglossus.③When single pulse electrical stimulation on dMNF,measurement latencies of genioglossus myoelectric activities were respectively (50.8[FK(W+3mm。3mm]±0 6) ms and (94.7[FK(W+3mm。3mm]±0 5) ms. Conclusion:dMNF has regulating effects on the myoelectric activities of genioglossus and the excitation of dMNF can enhance the myoelectric activities of genioglossus so that the resistance of upper airway might be decreased.

关 键 词：面神经核背内侧区 颏舌肌 电生理学 肌电活动 

分 类 号：R331.38[医药卫生—人体生理学] R338[医药卫生—基础医学]