Matsuo N, Ohkita Y, Tomita Y, Honda S, Matsunaga K
R&D Center, Suzuki Motor Corporation, 2-1 Sakura-namiki, Tsuzuki-ku, 224-0046, Yokohama, Japan.
Int J Psychophysiol. 2001 Apr;40(3):195-200. doi: 10.1016/s0167-8760(00)00187-2.
An unexpected-overlooking error that caused failure to notice near the peripheral vision is one of the accident factors in driving behavior. We estimated how the unexpected-overlooking error affected the amplitude of the lambda wave in the eye fixation related potential (EFRP). Four subjects participated in the experiment. Each subject was required press the right or left switch according to the given task, which was that he/she pressed the right switch when the blue dot appeared in the right detected area or he/she pressed the left switch when the red dot appeared in the right. The single trial data from Pz, which referred to both earlobes, were analyzed by means of a wavelet transform (WT) filter. The difference of the lambda amplitude between the corrected data was applied for analysis of variance. Three subjects showed a significant effect (P<0.01 or P<0.05), and the remaining one subject did not show a significant consequence of only two errors. The unexpected-overlooking errors had a low amplitude compared to the mean of amplitude throughout the task. It was concluded that the amplitude of the lambda wave might reflect the attention level of a subject.
驾驶行为中的事故因素之一是导致未能注意到周边视觉范围内情况的意外疏忽错误。我们估计了这种意外疏忽错误如何影响眼动注视相关电位（EFRP）中λ波的振幅。四名受试者参与了实验。每个受试者都被要求根据给定任务按下右或左开关，即当蓝点出现在右侧检测区域时按下右开关，或者当红点出现在右侧时按下左开关。通过小波变换（WT）滤波器对来自Pz（代表双耳耳垂）的单次试验数据进行分析。对校正后数据的λ波振幅差异进行方差分析。三名受试者表现出显著影响（P<0.01或P<0.05），其余一名受试者仅出现两次错误，未表现出显著结果。与整个任务期间的平均振幅相比，意外疏忽错误的振幅较低。得出的结论是，λ波的振幅可能反映受试者的注意力水平。
