论文部分内容阅读
目的探讨脑短暂性缺血发作（ＴＩＡ）引起的脑功能紊乱的生物电特征，为飞行员、航天员选拔提供可参考的评价方法。方法用ＣＦＭ－８ＤＥＥＧ监护仪记录了１２名飞行员（男性，３０±５）发生ＴＩＡ后的ＥＥＧ，应用脑波频率涨落分析系统分析了脑α波优势频率的不确定性，并与２０名健康飞行员进行了比较。结果发生ＴＩＡ但ＥＥＧ正常的飞行员，其主频出现优势涨落几率与健康飞行员比有明显的差异（Ｐ＜０．０１），且主频几率优势比指数Ｉ≥０，而健康飞行员主频几率优势比Ｉ＜０；与２０名健康飞行员比较，相对熵值减少明显（Ｐ＜０．０５）。发生ＴＩＡ且局部出现ＥＥＧ改变的飞行员不但Ｉ≥０且脑波出现优势频率慢化。结论应用脑α波优势频率不确定性分析评价脑的缺血反应比ＥＥＧ判读更优越。该研究结果不仅为ＴＩＡ脑功能病理生理研究提供了评价参数，而且也为飞行员和航天员选拔提供了评价方法。
Objective To investigate the bioelectrical characteristics of brain dysfunction caused by transient ischemic attack (TIA) in the brain and to provide a reference for the selection of pilots and astronauts. Methods EEG was recorded after TIA in 12 pilots (male, 30 ± 5) with CFM-8 DEEG monitor. The uncertainty of the predominant frequency of brain α wave was analyzed by using the brain wave frequency fluctuation analysis system and was compared with 20 healthy Pilots were compared. Results Pilots who had TIA but had normal EEG had a significant difference in dominant frequency (P <0.01), and the odds ratio index (I≥0), while the frequency of healthy pilots The odds ratio I <0; Compared with 20 healthy pilots, the relative entropy decreased significantly (P <0.05). Pilots who developed TIA and had local EEG changes not only had I ≧ 0 but also had a modest frequency of brainwave suppression. Conclusion It is superior to EEG to evaluate the cerebral ischemic response by using the uncertainty of dominant frequency of cerebral α wave. The findings not only provide evaluation parameters for the pathophysiology of TIA brain function, but also provide an evaluation method for pilot and astronaut selection.