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. 2019 Feb 5;10:66. doi: 10.3389/fneur.2019.00066

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Copyright © 2019 Gorlova, Ichiba, Nishimaru, Takamura, Matsumoto, Hori, Nagashima, Tatsuse, Ono and Nishijo.

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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Experimental and shift schedule during the survey. The EEGs, ECGs, and skin temperature (Skin temp) were recorded on the night between consecutive dayshift (between day 2 and day 3). Fatigue and other subjective parameters were measured at bedtime on day 2 and at wake time on day 3, respectively. O, Day Off; D, Day shift; N, Night shift; PSQI, Pittsburgh Sleep Quality Index; MEQ, Morningness-Eveningness Questionnaire; STAI-S, state anxiety questionnaires of State-Trait Anxiety Inventory; VAS, visual analog scale; SMSH, Saint Mary's Hospital Sleep Questionnaire; KSS-J, Karolinska Sleepiness Scale (Japanese version); BP, blood pressure.