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. 2019 May 2;5:10. doi: 10.1038/s41526-019-0069-0

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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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Fig. 2 — Theta power topographical distribution across the recording conditions. a Normalised theta power for Earth, space1 and space2. Consistent central distribution of the theta power in all conditions. b In space1 and space2 compared to Earth, theta is globally increased for a majority of astronauts. Red colour indicates an increase of theta power in space compared to Earth (paired t-test, t-values, white dots uncorrected p-values < 0.05). c Space1-Earth and space2-Earth differences in theta power for each astronaut (1–5). Differences in theta power from space to Earth are observed but no clear topographical pattern emerges. (n = 5 astronauts)