Firing Properties and Classification of MVN Neurons in Rats  

作　　者：汪绪武 孔维佳 

机构地区：[1]Department of Otolaryngology,Xiehe Hospital,Tongji Medical College,Huazhong University of Science and Technology, Wuhan 430022,China

出　　处：《Journal of Huazhong University of Science and Technology(Medical Sciences)》2003年第2期201-202,205,共3页华中科技大学学报（医学英德文版）

基　　金：This project was supported by a grant from National Outstanding Youth Scientist Foundation(No.39925035),National Natural Sciences Foundation of China(No.30070809)and Foundation for University Key Teacher by the Ministry of Education.

摘　　要：In order to know the effects of caloric stimulation on neuronal firing in medial vestibular nuclei (MVN) by middle ear irrigation, the middle ear was irrigated with ice (4℃, hot (44℃. and warm (37℃ ) water, and the firing rate of MVN neuron was extracellularly recorded. The results showed that the firing rate of MVN neuron was changed by caloric stimulation, and the majority of MVN neurons showed excitation by irrigation with hot water and inhibition by ice water (type A). The neuronal firing was recovered immediately after the cessation of the stimulation. I It was concluded that the neuronal firing rate in MVN was changed by caloric stimulation in middle ear cavity. The response was different in various neurons.In order to know the effects of caloric stimulation on neuronal firing in medial vestibular nuclei (MVN) by middle ear irrigation, the middle ear was irrigated with ice (4℃, hot (44℃. and warm (37℃ ) water, and the firing rate of MVN neuron was extracellularly recorded. The results showed that the firing rate of MVN neuron was changed by caloric stimulation, and the majority of MVN neurons showed excitation by irrigation with hot water and inhibition by ice water (type A). The neuronal firing was recovered immediately after the cessation of the stimulation. I It was concluded that the neuronal firing rate in MVN was changed by caloric stimulation in middle ear cavity. The response was different in various neurons.

关 键 词：vestibular nuclei caloric stimulation ELECTROPHYSIOLOGY 

分 类 号：R363[医药卫生—病理学]