摘要
为探讨飞行员脑波α频段涨落图特征，应用脑功能脑电－涨落图（ＥＥＧ－ＥＴ）评价技术，研究了２６１名歼击机飞行员脑波α频段的涨落图特征。结果显示：飞行员的脑波α频段频率涨落竞争结构的主涨落成分为９Ｈｚ，次涨落成分为１０Ｈｚ，７Ｈｚ在涨落优势序排列中占第三位。频率涨落竞争结构相对熵值平均为（７２±１４）％，枕区的导联Ｏ１、Ｏ２的相对熵值低，分别为（６９±１７）％和（６７±１８）％。脑波α频段功率涨落功率谱分析显示，５７名主诉易出现黑视、飞行时间为１１００～１４５０ｈ的飞行员其功率涨落功率谱２１．３９ｍＨｚ出现优势峰，以前的临床观察实验已证明该频率谱功优势峰与脑因供血不足引起的缺血性反应有关。
The frequency-fluctuation characteristics in α frequency band were studied by EEG-Encephalofluctuographic Technology (EEG-ET) in 261 pilots. The electrical activity was recorded from 12 scalp monopolar leads of the international 10～20 system using linked ear lobes as reference. The components of the competitive frequency-fluctuation structure in α frequency band was analysed. The results showed that the predominant frequency component of the competitive structure was 9 Hz in the 261 normal healthy pilots.The second was 10 Hz. And the third was 7 Hz.The other competitive frequency components were inhibited. The relative entropy value(percentage) of the competivity structure was calculated for each EEG derivation of each pilot.We also analysed the spectra of the EEG-Encephalofluctuograph. We found that there was a dominant power peak at 21.39mHz in 57 pilots who complained in-flight blackout sometimes during acceleration.
出处
《航天医学与医学工程》
CAS
CSCD
1998年第1期11-15,共5页
Space Medicine & Medical Engineering
关键词
脑电涨落图评价
飞行员选拔
频率涨落
electroencephalofluctuograph technology pilot selection competitive frequency-fluctuating structure entropy
