Yu Bo, Wang Xunda, Ma Lin, Li Liang, Li Haifeng
School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China; Software College, Harbin University of Science and Technology, Harbin, 150001, China.
School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China.
PLoS One. 2015 Sep 14;10(9):e0137649. doi: 10.1371/journal.pone.0137649. eCollection 2015.
Cognitive control has been extensively studied from Event-Related Potential (ERP) point of view in visual modality using Stroop paradigms. Little work has been done in auditory Stroop paradigms, and inconsistent conclusions have been reported, especially on the conflict detection stage of cognitive control. This study investigated the early ERP components in an auditory Stroop paradigm, during which participants were asked to identify the volume of spoken words and ignore the word meanings. A series of significant ERP components were revealed that distinguished incongruent and congruent trials: two declined negative polarity waves (the N1 and the N2) and three declined positive polarity wave (the P1, the P2 and the P3) over the fronto-central area for the incongruent trials. These early ERP components imply that both a perceptual stage and an identification stage exist in the auditory Stroop effect. A 3-stage cognitive control model was thus proposed for a more detailed description of the human cognitive control mechanism in the auditory Stroop tasks.
从事件相关电位（ERP）的角度来看，认知控制已经在视觉模态中使用斯特鲁普范式进行了广泛研究。在听觉斯特鲁普范式方面的研究较少，并且已经报道了不一致的结论，特别是在认知控制的冲突检测阶段。本研究在听觉斯特鲁普范式中研究了早期ERP成分，在此期间，参与者被要求识别口语单词的音量并忽略单词的含义。揭示了一系列显著的ERP成分，这些成分区分了不一致和一致的试验：在额中央区域，不一致试验出现了两个负向波（N1和N2）和三个正向波（P1、P2和P3）。这些早期ERP成分表明，听觉斯特鲁普效应中存在一个感知阶段和一个识别阶段。因此，提出了一个三阶段认知控制模型，以更详细地描述听觉斯特鲁普任务中的人类认知控制机制。
