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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. 2 — Identification of stimulus-specific activity patterns. a Two clusters showed stimulus-specific representations (i.e., higher correlations between encoding of one and retrieval of the same item as compared to encoding of one and retrieval of a different item) in the gamma range: an early cluster (100–500 ms, blue frame) and a late cluster (500–1200 ms, black frame). b Functional relevance of clusters showing stimulus-specific representations in panel a for memory. Higher similarity between encoding and retrieval of subsequently remembered than forgotten items in the late cluster, but not in the early cluster. Each colorful dot indicates one participant. Same colors indicate data from the same participant. c Two clusters showed stimulus-specific representations in the epsilon range. d The similarity level within clusters in c did not differ between remembered and forgotten items. Each colorful dot indicates one participant. Same colors indicate data from the same participant. Error bars, standard error of the mean; **p < 0.01 (paired t test)