热湿环境下矿工注意力对应急决策影响的脑电研究

EEG research on the emergency decision in thermal and humidity environment

为探讨不同热湿环境下矿工注意力对应急决策的影响,模拟了4种不同工况环境,召集了11名被试,运用认知神经科学方法共进行了44次脑电图记录。结果表明,体感温度在26~36℃被试可以保持较高的注意力水平,能够针对突发事件迅速且正确地做出决策。随着温湿度的升高,α波的平均功率不断增加,β波在工况三达到峰值后减小,脑地形图中β波在工况三占比最大;注意力水平(P(SMR+Middleβ)/P(θ))随温湿度的增加而降低,工况三时注意力水平最高,工况四时与其相比降低了69.6%。相关性分析显示,温湿度与任务完成时间存在高度正相关关系。对热湿环境下矿工的应急决策研究能够为深井采矿工人的安全和保护提供参考,降低决策失误造成的损失,为煤矿企业的安全管理工作提供科学依据。

To research the validity of miners'attention on emergency decision-making when exposed to different thermal and humidity environments,this paper simulated four different working conditions,and designed an Electroencephalogram(EEG)experiment and attention level test to obtain experimental data.In the experiment,11 subjects were conducted with a total of 44 EEG recordings using cognitive neuroscience methods.To compare the EEG changes of subjects under different working conditions and elucidate the effects of temperature and humidity on human attention,initially,the collected EEG data were preprocessed by band-pass filtering and independent component analysis.Furthermore,the average power and proportion of EEG waves,attention level,and other EEG features were calculated based on MATLAB.Ultimately,Pearson analysis based on SPSS was used to calculate the degrees of correlation between temperature and humidity and task completion time.The results show that with apparent temperature ranging from 26℃to 36℃,subjects can maintain a high level of attention and be able to make quick and correct decisions in response to unexpected events.With the increase of temperature and humidity,the average power ofα-wave increases continuously,the average power ofβ-wave decreases after reaching the peak in condition 3 and the proportion ofβ-wave in the brain topography is the largest in condition 3.The attention level[P(SMR+Middleβ)/P(θ)]drops as the temperature and humidity increase.It can be found that the highest attention level is in condition 3 and increased by 69.6%compared with condition 4 which had the lowest attention level.The correlation analysis shows that temperature and humidity are positively correlated with the completion time of the task.The study of emergency decisionmaking for miners in thermal and humidity environments can contribute to the safety and protection of deep shaft mining workers,reduce losses caused by decision-making errors and supply a scientific basis for the safety management of coal mine enterprises.