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. 2018 Oct 5;9:4103. doi: 10.1038/s41467-018-06553-y

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© The Author(s) 2018

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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Fig. 3 — Spontaneous replay during rest. a Schematic illustration of analysis procedure. Reactivation is quantified by correlating activity during each encoding event and each time period during the resting state. Each circle in the brain indicates one channel. The hotter the color of the circle, the higher the EEG power. b Higher replay of stimulus-specific activity from late encoding cluster (500–1200 ms) of remote vs. recent items. * indicates p < 0.05 (paired t test). Reactivation does not differ between remembered and forgotten remote items c or between waking state and nREM sleep d. e Encoding-time resolved replay during rest. Reactivation differs between remote and recent items in three time periods marked with *s in different colors after cluster-based correction for multiple comparisons (surrogate data was generated by switching remote and recent labels). f Averaged replay levels of all clusters depicted in e as compared to zero. Each colorful dot indicates one participant. Same colors indicate data from the same participant. Error bars, standard error of the mean; * indicates significant difference from zero (one sample t-test, p < 0.05)