摘要
目的∶通过观察大鼠在急性脑缺血再灌期间ＥＥＧ主频率功率、功率谱及频率分配的变化，探讨脑缺血再灌流损伤过程中脑电变化的规律。方法∶采用改良四动脉结扎法制作大鼠脑缺血再灌流模型，缺血４０ｍｉｎ后再灌６０ｍｉｎ。结果∶缺血可致ＥＥＧ总功率、主频率功率减小，δ和θ频段所占总功率比率减小而α和β频段比率增加。结论∶提示ＥＥＧ各频段电活动的改变可作为脑缺血性疾病诊断中的重要参考指标之一。
Objective∶To search the law of EEG changes during cerebral ischemia and repurfusion injury in rats Methods∶ Four-vessel occlusion methods were used Alternations of EEG document frequency, power spectrum and frequency distribution were observed during ischemia-reperfusion Results:Total EEG power and δ document frequency decreased δ and θ frequency component decreased while the ratio of δ and θ in total EEG power increased Conclusion: The alternations of EEG can be used as significant references to diagnose cerebral ischemia disease
出处
《宁夏医学院学报》
1998年第4期1-3,共3页
Journal of Ningxia Medical College
关键词
脑缺血
EEG
总功率
再灌注损伤
脑生物电
Brain ischemia
reperfusion
electroencephalograph
total power
frequency distribution
