Sleep and circadian rhythms in humans - PubMed
Circadian pacemakers in humans drive daily variations in many physiologic and behavioral variables, including circadian rhythms in alertness and sleep propensity. Under entrained conditions, these rhythms interact with homeostatic regulation of the sleep/wake cycle to determine the ability to sustain vigilance during the day and to sleep at night.
Charles Czeisler - Wikipedia
Czeisler's research interests encompass many areas, including the effects of light on human circadian rhythms, the role of sleep and circadian rhythms in metabolism, the impact of shift work on health and productivity, and the effects of melatonin and melatonin receptor agonists on …
the periods of the endogenous circadian rhythms of melatonin, core body temperature, and cortisol in healthy young and older individuals living in carefully controlled lighting conditions has now revealed that the intrinsic
Bright Light Resets the Human Circadian Pacemaker Independent …
Human circadian rhythms were once thought to be insensitive to light, with synchronization to the 24-hour day accomplished either through social contacts or the sleep-wake schedule. Yet the demonstration of an intensity-dependent neuroendocrine response to bright light has led to renewed consideration of light as a possible synchronizer of the ...
Sleep and circadian rhythms in humans. - Semantic Scholar
Circadian pacemakers in humans drive daily variations in many physiologic and behavioral variables, including circadian rhythms in alertness and sleep propensity. Under entrained conditions, these rhythms interact with homeostatic regulation of the sleep/wake cycle to determine the ability to sustain vigilance during the day and to sleep at night.
Sleep and Circadian Rhythms in Humans - CSHL P
Paradoxical timing of the circadian rhythm of sleep propensity serves to consolidate sleep and wakefulness in humans. Neurosci. Lett. 166 : 63 .
Circadian pacemakers in humans drive daily variations in many physiologic and behavioral variables, including circadian rhythms in alertness and sleep propensity. Under entrained conditions, these rhythms interact with homeostatic regulation of the sleep/wake cycle to determine the ability to sustain vigi-lance during the day and to sleep at night.
Charles A. Czeisler | Sleep Medicine - Harvard University
Baldino Professor of Sleep Medicine. Senior Investigator, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital.
Melatonin, sleep, and circadian rhythms - PubMed
Melatonin, sleep, and circadian rhythms. Melatonin, sleep, and circadian rhythms. Melatonin, sleep, and circadian rhythms ... 10.1016/j.smrv.2004.11.004. Authors Frank A J L Scheer, Charles A Czeisler. PMID: 15649734 DOI: 10.1016/j.smrv .2004.11.004 No abstract available ... Animals Circadian Rhythm / drug effects Circadian Rhythm / physiology* ...
ENTRAINMENT OF HUMAN CIRCADIAN RHYTHMS BY …
We report new studies in which we tested the efficacy of LD cycles in entraining the circadian rhythms of human subjects living in isolation from environmental time cues. We found that the cyclic alternation of light and dark, when applied to human subjects in a comparable way to experiments in other species, was an effective entraining agent.