生产性噪声对工作人员脑认知影响的ERP分析

发布时间：2018-05-26 19:30

本文选题：生产性噪声 + EEG　；参考：《东北大学学报(自然科学版)》2017年11期

【摘要】：为工业企业听力保护计划制定、人机工程学设计及劳动者烦恼度缓解等提供客观的生理依据,分析了生产性噪声对工作人员脑认知的影响.采集自愿者在90 d B(A)的稳态机械性噪声刺激以及安静状态下的脑电信号,建立事件相关脑电位ERP中N1(N100)波的幅值脑地形图及P2(P200)波幅值的脑地形图,对ERP信号进行时频分析.结果表明噪声刺激与静音状态相比,ERP在N1波的幅值明显减少,而在P2波幅值变化呈相反趋势明显增加.噪声刺激下被试额区导联的N1幅值显著减小,P2幅值显著增加,表明高声压级生产性噪声导致被试烦躁、注意力分散,并干扰了认知能力.
[Abstract]:This paper provides an objective physiological basis for the establishment of hearing protection plan, ergonomics design and the relief of workers' annoyance in industrial enterprises, and analyzes the effect of productive noise on the brain cognition of workers. The steady-state mechanical noise stimuli and the EEG signals in quiet state were collected from volunteers at 90 d BPA. The amplitudes of N _ (1) N _ (100) and P _ (2 + P _ (200) waves in event-related brain potential (ERP) were established, and the time-frequency analysis of ERP signals was carried out. The results showed that the amplitude of ERP in N1 wave decreased obviously in noise stimulation state compared with that in silent state, but the amplitude change in P2 wave showed a reverse trend. The N1 amplitude of frontal-area leads significantly decreased and P2 amplitude increased significantly under noise stimulation, which indicated that productive noise with high acoustic pressure level led to agitation, distraction and interference with cognitive ability.
【作者单位】：东北大学机械工程与自动化学院;
【基金】：国家自然科学基金资助项目(51405073)
【分类号】：R135;TN911.6

【相似文献】