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. 2020 Mar 4;10:4026. doi: 10.1038/s41598-020-60693-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The ERN results in the theta, alpha and beta frequency bands, respectively. Panel a shows theta-ERN results, indicating that theta-ERN is significantly larger for aware compared with unaware errors. Panels b and c show alpha-ERN and beta-ERN results, indicating that alpha-ERN and beta-ERN are both not difference between aware and unaware errors. Blue line indicates the neural activity of aware errors, green line indicates the neural activity of unaware errors, and red line indicates the neural activity of correct go trials.