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刺激延脑内侧网状结构对猫胃电慢波影响的定位与猫胃电慢波的FFT分析
引用本文:欧阳守,许冠荪,李小华,李淼.刺激延脑内侧网状结构对猫胃电慢波影响的定位与猫胃电慢波的FFT分析[J].动物学报,1987(1).
作者姓名:欧阳守  许冠荪  李小华  李淼
作者单位:安徽中医学院针灸经络研究所 (欧阳守,许冠荪),中国科学院合肥智能机械研究所 (李小华),中国科学院合肥智能机械研究所(李淼)
摘    要:本工作在48只猫上观察电刺激延脑P6-P13中央部分对胃电的影响。并采用直观和微机FFT分析的方法,分别比较Ag-AgCl圆盘电极与环状铂丝电极引导的猫胃电的差异。结果表明,在延脑存在着分别能使胃体部胃电或胃窦部胃电的幅度或频率产生兴奋、抑制或兴奋/抑制的三种不同效应的结构。提示在延脑的中央部分,主要是内侧网状结构,在调整胃功能的活动中有一定的作用。


LOCALIZATION OF MEDULLARY STRUCTURES PRODUCING VARIOUS EFFECTS ON GASTROELECTRIC ACTIVITIES (GEA) IN CATS AND PERFORMANCE OF FFT ANALYSES
OUYANG SHOU XU GUANUN.LOCALIZATION OF MEDULLARY STRUCTURES PRODUCING VARIOUS EFFECTS ON GASTROELECTRIC ACTIVITIES (GEA) IN CATS AND PERFORMANCE OF FFT ANALYSES[J].Acta Zoologica Sinica,1987(1).
Authors:OUYANG SHOU XU GUANUN
Abstract:This paper studied the effects on gastroelectric activity (GEA) by stimulation of central sites in medulla oblongata (MO, P6 to P13) of 48 cats. The GEAs were led from smooth muscle under tunics serosa in corpus ventriculi (cv) and antrum pyloricum (ap) by Ag-AgCl disc electrodes and platinum wire electrodes, respectively. A comparison between the GEAs led by the two types of electrodes was made. The GEAs before and after stimulation of MO were respectively analyzed both by means of visual examination and by means of Fast Fourier Transform (FFT), using a TRS-80 minicomputer.From power spectra, it was shown that the frequency band of the GEAs led by disc electrodes was from 0 to 6 cyde/min, and by platinum wire electrodes was from 0 to 18 cycle/mm. There are structures in the formation reticularis of MO exerting one of the three kinds of effects, i.e. excitation, inhibition and excitation/inhibition. The effects of stimulation of different structures on GEA of cv and GEA of ap can be different. The results indicate that the central part of MO plays an important role in the regulation of the activity of stomach.
Keywords:Medulla oblongata  Medial reticular formation  Gastroelectric activity  FFT analysis  
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