Xiao Yi, Ma Feng, Lv Yixuan, Cai Gui, Teng Peng, Xu FengGang, Chen Shanguang
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing, China.
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing, China; School of Aerospace, Tsinghua University, Beijing, China.
PLoS One. 2015 Mar 10;10(3):e0117837. doi: 10.1371/journal.pone.0117837. eCollection 2015.
Attention is important in error processing. Few studies have examined the link between sustained attention and error processing. In this study, we examined how error-related negativity (ERN) of a four-choice reaction time task was reduced in the mental fatigue condition and investigated the role of sustained attention in error processing. Forty-one recruited participants were divided into two groups. In the fatigue experiment group, 20 subjects performed a fatigue experiment and an additional continuous psychomotor vigilance test (PVT) for 1 h. In the normal experiment group, 21 subjects only performed the normal experimental procedures without the PVT test. Fatigue and sustained attention states were assessed with a questionnaire. Event-related potential results showed that ERN (p < 0.005) and peak (p < 0.05) mean amplitudes decreased in the fatigue experiment. ERN amplitudes were significantly associated with the attention and fatigue states in electrodes Fz, FC1, Cz, and FC2. These findings indicated that sustained attention was related to error processing and that decreased attention is likely the cause of error processing impairment.
注意力在错误处理中很重要。很少有研究考察持续注意力与错误处理之间的联系。在本研究中，我们考察了在心理疲劳状态下四选一反应时任务的错误相关负波（ERN）是如何降低的，并研究了持续注意力在错误处理中的作用。招募的41名参与者被分为两组。在疲劳实验组中，20名受试者进行了疲劳实验和额外1小时的连续心理运动警觉性测试（PVT）。在正常实验组中，21名受试者仅进行了正常实验程序，未进行PVT测试。使用问卷评估疲劳和持续注意力状态。事件相关电位结果显示，在疲劳实验中ERN（p < 0.005）和峰值（p < 0.05）平均振幅降低。ERN振幅在电极Fz、FC1、Cz和FC2中与注意力和疲劳状态显著相关。这些发现表明持续注意力与错误处理有关，注意力下降可能是错误处理受损的原因。
