Sleep is regulated by a homeostatic and a circadian process. Together these two processes
determine most aspects of sleep and related variables like sleepiness and alertness. The …

Much of the current science on, and mathematical modeling of, dynamic changes in human
performance within and between days is dominated by the two-process model of sleep …

Background: Light–dark alternation has always been the strongest external circadian
“zeitgeber” for humans. Due to its growing technological preference, our society is quickly …

Objectives: Fatigue is a common feature of physical and neurological disease as well as
psychiatric disorders, often reported amongst patients' most severe and distressing …

Extensive evidence from animal and human studies indicates that stress and glucocorticoids
influence cognitive function1-11. Previous studies have focused exclusively on …

Although peaks and troughs in cognitive performance characterize our daily functioning,
time-of-day fluctuations remain marginally considered in the domain of cognitive psychology …

The aim of this study was to determine the relationship between circadian preferences,
regularity of sleep patterns, sleep problems, daytime sleepiness and daytime behaviour. As …

The aim of this study was to examine the associations between sleep and neurobehavioral
functioning (NBF) in school‐age children. These variables were assessed for 135 …

Body temperature has been reported to influence human performance. Performance is
reported to be better when body temperature is high/near its circadian peak and worse when …

A large body of sleep physiology research highlights a broad array of effects of sleep on
human functioning. Until recently, this literature has been completely isolated from the …