Research on pilots′ hypoxic sensitive EEG index in cognitive conflict processing
10.3760/cma.j.cn113854-20230911-00089
- VernacularTitle:低氧状态下飞行员认知冲突加工脑电指标研究
- Author:
Qiong CHEN
1
;
Guohua JIANG
;
Yulin XU
;
Qingjun GUO
;
Xiaojian CHEN
;
Wei FENG
;
Xinni XU
;
Wei ZHENG
;
Yin TAO
;
Tao XU
Author Information
1. 空军杭州特勤疗养中心疗养一区加速度生理训练科，杭州 310013
- Publication Type:Journal Article
- Keywords:
Hypoxia, brain;
Neurobehavioral manifestations;
Evoked potentials;
Pilots
- From:
Chinese Journal of Aerospace Medicine
2024;35(3):180-186
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the brain activity and related hypoxic indicators in early cognitive processing stage (200-600 ms) and late cognitive processing stage (600-1 000 ms) by comparing their cognitive processing in pilots performed classical Stroop task under hypoxic state.Methods:Fifteen male Air Force pilots who were qualified in aeromedical assessment were selected. The behavioral indicators (accuracy, response time), event related potentials (ERP) component metrics (N2), and spectral metrics (Alpha band, Beta band) were monitored and analyzed when the pilots complete the cognitive conflict control task in the simulated 5 000 m hypoxic state and normal state.Results:The main effect of relationship type factors in response time indicators was significant ( F=4.10, P=0.027), and no difference found in accuracy indicators (all P>0.05). The reaction time under conflict conditions was (543.360±21.202) ms, which was higher than the reaction time under consistent conditions (509.078±14.420) ms, and the difference was significant ( F=3.28, P=0.039). The reaction time under unrelated conditions was (521.697±15.073) ms, and there was no significant difference between the reaction time under consistent and conflicting conditions (all P>0.05). Hypoxic status resulted in a significant increases in early stage indicator N2 amplitude ( F=5.34, P=0.037), and the power of Alpha, Low beta and Mid beta of late stage ( F=7.76, 5.34, 4.92, P=0.015, 0.037, 0.044). Conclusions:The amplitude of N2 can be used as the ERP indicator to investigate the pilots′ brain activities at the early stage of cognitive processing under hypoxia state; Alpha, Low beta and Mid beta bands of the spectrum can be used as the indicators to evaluate the brain activity of pilots in the late stage of cognitive processing under hypoxia state, which can be used in the training evaluation of pilots to provide more objective physiological data to improve the training effect of pilots.
