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. 2019 Sep 20;10:985. doi: 10.3389/fneur.2019.00985

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Copyright © 2019 Scarpelli, D'Atri, Bartolacci, Mangiaruga, Gorgoni and De Gennaro.

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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Oscillatory activity in young subjects during the last 5 min of REM sleep. Proportion of time (P_episode [f]) occupied by oscillations at each frequency during the last 5 min of REM sleep preceding the awakenings with REC (red line) or NREC (blue line) in young subjects. The mean proportion of time of the EEG activity is plotted at the corresponding scalp location. Units of frequency are expressed in hertz and are plotted in 50 logarithmically spaced frequency values in the 1–30 Hz frequency range.