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. 2020 May 18;11:2469. doi: 10.1038/s41467-020-15670-6

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© The Author(s) 2020

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. 5 — a An example electrode with a positive high-theta frequency–speed correlation. Two-second trace of filtered hippocampal oscillations during slow, medium, and fast speeds. Pearson r correlation is reported between speed and frequency, r = 0.35, p = 0.02. b Example electrodes from both left and right hippocampus that display significantly positive high-theta speed–frequency correlations. Pearson r correlations are reported between speed and frequency for each electrode. c Histogram of correlation coefficients for single and dual oscillators, separately aggregated for low- and high-theta bands. Significant correlations indicated in red. Error bars are SEM. Low-theta single oscillators: n = 2 electrodes. Low-/high-theta dual oscillators: n = 19 electrodes. High-theta single oscillators: n = 19 electrodes. d Percentage of electrodes in each hippocampal region with a significant positive correlation between movement speed and frequency for both low- and high-theta bands. Data in panels c and d were computed after subsampling to include only one movement epoch per trial. Source data are provided as a Source Data file.