不同作业阶段矿工安全注意力的事件相关电位研究

为了深入探讨不同作业阶段矿工安全注意力的变化规律，通过事件相关电位的脑电实验设计，用E-prime编写刺激程序，采用64导脑电仪采集脑电数据，并用BESA软件对脑电数据进行预处理和分析。结果表明:在不同作业阶段，P300的波幅和潜伏期具有显著的差异。在作业前期阶段，P300的波幅最大、潜伏期最短；在作业中期阶段，P300的波幅最小，潜伏期最长；在作业后期阶段，P300的波幅和潜伏期介于前期阶段和中期阶段之间，且数值接近中期阶段。说明在作业前期阶段，矿工安全注意力水平较高；在中期阶段，大幅度衰减；在后期阶段，安全注意力水平有小幅度的上升，但是仍然远远低于前期阶段的注意力水平。

Study on event-related potentials for safety attention of miners in different operation stages

In order to deeply explore the changing rules of safety attention for miners in different operation stages, through the brain potentials experiment design of event-related potentials (ERP), the stimulation program was compiles by using E-prime, then the data of brain potentials were collected by using the 64 conductor electroencephalograph, and the preprocessing and analysis of the brain potentials data were carried out by using the BESA software. The results showed that in different operation stages, the wave amplitude and latency period of P300 had significant differences. In the early stage of operation, the wave amplitude of P300 was the largest, and the latency period was the shortest. In the middle stage of operation, the wave amplitude of P300 was the smallest, and the latency period was the longest. In the later stage of operation, the wave amplitude and latency period of P300 were between the early stage and middle stage, and the values were close to those in the middle stage. It showed that the safety attention level of miners was higher in the early stage of operation, then sharply attenuated in the middle stage, and increased slightly in the later stage, but still far lower than that in the early stage.