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. 2021 Oct 21;12:745330. doi: 10.3389/fneur.2021.745330

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Copyright © 2021 Mountney, Blaze, Wang, Umali, Flerlage, Dougherty, Ge, Shear and Haghighi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Sleep parameters for contralateral and ipsilateral hemispheres in sham and PBBI animals in the dark phase during the acute post-injury period. Time spent in each vigilance state was collapsed over 12 h bins and compared between hemispheres and injury groups. (A) PBBI rats showed significant increases in NREM sleep on the ipsilateral hemisphere only. (B) WASO, NREM onset, and REM onset were not significantly different between sham and injury groups. PBBI rats showed significant decreases in the number of (C) sleep transitions and (D) sleep bouts and increased NREM mean bout duration (E). Significant changes were more prevalent on the ipsilateral side. N=6 PBBI / 5 sham. All data are depicted as the mean ± SEM. WASO = wake after sleep onset (***p < 0.001, **p < 0.01, *p < 0.05).