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. 2022 Feb 14;16:812624. doi: 10.3389/fnins.2022.812624

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Copyright © 2022 Hu, Zhang, Zhang, Huang, Li and Liang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The spatial correlation results with the public microstate templates. The heatmap is a visual display of the calculated correlation coefficient of topographical similarity. In a range from 0 to 1, a higher correlation coefficient is marked as red indicating a close topographical similarity between identified microstates and the public microstate templates, whereas a low correlation coefficient is marked as blue referring to a topographical dissimilarity. Here, (A–D) refer to the results of the identified EEG microstate templates by Case 1, 2, 3, and 4; (E) and (F) refer to the results of the identified valence-based and arousal-based EEG microstate templates by Case 5.