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. 2021 Sep 24;15:746859. doi: 10.3389/fnsys.2021.746859

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Copyright © 2021 Cimenser, Hempel, Travers, Strozewski, Martin, Malchano and Hajós.

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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Cumulative distribution of rest and active durations based on 14,736 h of nighttime actigraphy data recorded from all participated patients (n = 22). The cumulative distributions of nighttime rest periods (displayed in blue) show exponential distribution, whereas active periods (displayed in black) show power law distribution. Solid lines show the best straight-line fits: rest durations can be fitted by a straight line in log-linear scale (A), and active durations can be fitted with a straight line in log-log scale (B). X axis display the nighttime durations; Y axis show the cumulative distributions. The current actigraphy data analysis revealed similar nighttime rest/activity dynamics to nighttime sleep/wake dynamics based on polysomnography data analysis (Lo et al., 2013).