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. 2019 Mar 12;9:4247. doi: 10.1038/s41598-018-38102-4

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© The Author(s) 2019

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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Comparison of PTSD_dx between PTSD and Control groups (Left Column); PCL-5 vs PTSD_sev of PTSD group (Right Column). Left column: Boxplots of PTSD_dx brain coherence marker for control and PTSD groups in wakefulness (Panel A), N1 Sleep (Panel C), N2 Sleep (Panel E). On each box, the central mark is the median, the edges of the box are the 25th and 75th percentiles, the whiskers extend to the most extreme data-points the algorithm considers to be not outliers, and the outliers are plotted individually. Right Column: Scatter plots of PTSD_sev vs PCL-5 in groups in wakefulness (Panel B), N1 Sleep (Panel D), N2 Sleep (Panel F), as well as the regression line for each state.