The Complex Pre-Execution Stage of Auditory Cognitive Control: ERPs Evidence from Stroop Tasks |
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| Authors: | Bo Yu Xunda Wang Lin Ma Liang Li Haifeng Li |
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| Affiliation: | 1. School of Computer Science and Technology, Harbin Institute of Technology, Harbin, 150001, China.; 2. Software College, Harbin University of Science and Technology, Harbin, 150001, China.; 3. Department of Psychology and Beijing Key Laboratory of Behavior and Mental Health, Speech and Hearing Research Center, Key Laboratory on Machine Perception (Ministry of Education), PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China.; University of Rome, ITALY, |
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| Abstract: | 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. |
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