Sleep, circadian rhythms, and mental health are reciprocally interlinked. Disruption to the
quality, continuity, and timing of sleep can precipitate or exacerbate psychiatric symptoms in …

Humans live in a 24-hour environment, in which light and darkness follow a diurnal pattern.
Our circadian pacemaker, the suprachiasmatic nuclei (SCN) in the hypothalamus, is …

In the last three decades the two‐process model of sleep regulation has served as a major
conceptual framework in sleep research. It has been applied widely in studies on fatigue …

Later chronotype (ie evening preference) and later timing of sleep have been associated
with greater morbidity, including higher rates of metabolic dysfunction and cardiovascular …

Shift work comprises work schedules that extend beyond the typical “nine-to-five” workday,
wherein schedules often comprise early work start, compressed work weeks with 12-hour …

Circadian rhythms are near 24-h patterns of physiology and behaviour that are present
independent of external cues including hormones, body temperature, mood, and sleep …

We identified individual-level diurnal and seasonal mood rhythms in cultures across the
globe, using data from millions of public Twitter messages. We found that individuals …

Aging is associated with numerous changes, including changes in sleep timing, duration,
and quality. The circadian timing system interacts with a sleep-wake homeostatic system to …

The objective of this review was to examine the evidence for the link between fatigue and
safety, especially in transport and occupational settings. For the purposes of this review …

Disturbances of sleep are typical for most depressed patients and belong to the core
symptoms of the disorder. Since the 1960s polysomnographic sleep research has …