模拟飞行任务对飞行员认知能力和心率变异性的影响

发布时间：2018-07-15 21:34

【摘要】：目的通过持续任务操作建立飞行员脑力疲劳模型,比较任务前后飞行员认知能力的变化,探究任务过程中心率变异性的变化规律,为筛选飞行员功能状态的客观监测指标提供依据。方法选取30名被试完成持续4h的模拟飞行任务,采用自身前后对照设计,在任务前后完成斯坦福嗜睡量表(SSS)、警戒作业任务模拟(PVT)和注意力转换测试(SAT)。在模拟飞行过程中对飞行员的心电指标进行监测。结果模拟飞行任务后,30名被试SSS评分升高(P0.05),PVT和SAT反应时间延长(P0.05)。在模拟飞行过程中,心率(F=9.81,P0.05)和心率变异性的时域指标即相邻R-R间期差值的均方根(RMSSD)(F=4.75,P0.05)有显著性变化,心率下降,RMSSD升高;其他心率变异性指标变化差异无统计学意义。结论认知能力相关指标判断脑力疲劳具有较好的敏感性,心电指标对于判别脑力疲劳具有一定的约束性。
[Abstract]:Objective to establish the mental fatigue model of pilots by continuous task operation, compare the changes of cognitive ability between pilots before and after the task, and explore the change rule of heart rate variability during the task. It provides the basis for screening the objective monitoring index of pilots' functional state. Methods A total of 30 subjects were selected to complete a simulated flight task lasting 4 hours. The subjects completed the Stanford sleepiness scale (SSS), alert task simulation (PVT) and attention conversion test (SAT) before and after the task. The ECG indexes of pilots were monitored during the simulated flight. Results the SSS scores of 30 subjects after simulated mission were increased (P0.05) and the reaction time of PVT and SAT were prolonged (P0.05). During the simulated flight, the mean square root (RMSSD) of the adjacent R-R interval (RMSSD) and the time domain index of heart rate variability (RMSSD) were significantly changed, the heart rate decreased and the RMSSD increased, but there was no significant difference in other indexes of heart rate variability. Conclusion Cognitive ability related indexes have good sensitivity in the judgment of mental fatigue, and ECG indexes have certain restriction to distinguish mental fatigue.
【作者单位】：第四军医大学航空航天医学系;第四军医大学医学遗传学与发展生物学教研室;
【基金】：全军后勤科研重大项目(AWS14L009)~~
【分类号】：R85

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