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. 2018 Jul 5;5(8):988–995. doi: 10.1002/acn3.596

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© 2018 The Authors. Annals of Clinical and Translational Neurology published by Wiley Periodicals, Inc on behalf of American Neurological Association.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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EEG power spectral density evolution. Legend. Evolution of the power spectral density of the EEG (log transform, unit log(μV²/Hz)) overt time showed the predominance of slow rhythm mainly in the delta (1–3‐Hz) frequency band at D7 and until M1. At M3, the background rhythm enriched with the diminution of the slow frequency for the benefit of theta (4–8 Hz) frequencies. At M6, theta frequencies left room to a normal alpha (9–12 Hz) background rhythm. Together with this rapid beta and gamma rhythm power spectra also increased over time probably due to more muscle artifacts with the patient regaining some mobility. See Data S1. D7, Day 7; Hz: Hertz; M1, Month 1; M3, Month 3; M6, Month 6; PSD, Power Spectral Density: V, Volt.