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. 2021 Jun 11;4:722. doi: 10.1038/s42003-021-02234-7

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© The Author(s) 2021

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. 6 — a Nissl stained section taken ~2.76 mm anterior to bregma from an example rat, showing electrode track and recording site (open circle). b Unfiltered epochs showing examples of spindles detected for each tree shrews and each rat. Red shaded areas indicate the detected spindle, insets below show the fast Fourier transform (fft) of the detected spindle between 5 and 30 Hz. Cg1 anterior cingulate cortex, M1 primary motor cortex, M2 secondary motor cortex, FMI forceps minor corpus callosum.