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. 2023 Feb 9;14:23. doi: 10.1186/s13287-022-03234-y

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© The Author(s) 2023

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 3 — Brain functional network analysis. a: The functional brain network in sleep period of all patients; b: Changes of brain network energy in two groups; c: Changes of degree, clustering coefficient, global efficiency, and characteristic path length in two groups; Baseline: before treatment; 6 M: 6 months after treatment; 24 M: 24 months after treatment; P1-P14: patients in the treatment group; P16-P25: patients in the control group; Node: the locations of the eight electrodes (C3, C4, P3, P4, O1, O2, P7, P8); Red line: the connectivity between nodes, the thicker the red line, the stronger the correlation, and the thinner the red line, the weaker the correlation