Contribution of core body temperature, prior wake time, and sleep stages to cognitive throughput performance during forced desynchrony

Chronobiology International
David DarwentGreg D Roach

Abstract

Shiftworkers are often required to sleep at inappropriate phases of their circadian timekeeping system, with implications for the dynamics of ultradian sleep stages. The independent effects of these changes on cognitive throughput performance are not well understood. This is because the effects of sleep on performance are usually confounded with circadian factors that cannot be controlled under normal day/night conditions. The aim of this study was to assess the contribution of prior wake, core body temperature, and sleep stages to cognitive throughput performance under conditions of forced desynchrony (FD). A total of 11 healthy young adult males resided in a sleep laboratory in which day/night zeitgebers were eliminated and ambient room temperature, lighting levels, and behavior were controlled. The protocol included 2 training days, a baseline day, and 7 x 28-h FD periods. Each FD period consisted of an 18.7-h wake period followed by a 9.3-h rest period. Sleep was assessed using standard polysomnography. Core body temperature and physical activity were assessed continuously in 1-min epochs. Cognitive throughput was measured by a 5-min serial addition and subtraction (SAS) task and a 90-s digit symbol substitution (DSS) task....Continue Reading

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Citations

Feb 4, 2016·International Journal of Environmental Research and Public Health·Charli SargentGregory D Roach
Jan 18, 2012·Accident; Analysis and Prevention·Georgina HeathCharli Sargent
Jan 18, 2012·Accident; Analysis and Prevention·Charli SargentGregory D Roach
Jan 18, 2012·Accident; Analysis and Prevention·Sally A FergusonGregory D Roach
Jan 18, 2012·Accident; Analysis and Prevention·Raymond W MatthewsGregory D Roach
May 25, 2012·Chronobiology International·Charli SargentGregory D Roach
May 25, 2012·Chronobiology International·Raymond W MatthewsGregory D Roach
Apr 15, 2016·Chronobiology International·Anastasi KosmadopoulosCharli Sargent
Apr 20, 2016·Proceedings of the National Academy of Sciences of the United States of America·Nayantara SanthiDerk-Jan Dijk
Nov 14, 2015·Accident; Analysis and Prevention·Raymond W MatthewsGregory D Roach
Nov 10, 2015·Accident; Analysis and Prevention·Xuan ZhouGregory D Roach
Nov 5, 2015·Accident; Analysis and Prevention·Anastasi KosmadopoulosGregory D Roach
Jun 2, 2015·Industrial Health·Natalie Skinner, Jill Dorrian
Apr 4, 2017·Nature Communications·Andrew S P LimPhilip L De Jager
Aug 17, 2019·Frontiers in Physiology·Gregory D Roach, Charli Sargent
Apr 2, 2011·Chronobiology International·Eric BrousseAlain Reinberg

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