2021
DOI: 10.1027/0269-8803/a000267
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Circadian Rhythms, Sleep, and Aging

Abstract: Abstract. Circadian mechanisms and the sleep-wakefulness rhythms guarantee survival, adaptation, efficient action in everyday life or in emergencies and well-being. Disordered circadian processes at central and/or cellular levels, sleep disorders, and unhealthy wakefulness/sleep rhythms can impair the physiological circadian organization and result in subjective, professional, or behavioral changes ranging from functional inadequacy to higher risks at work or on the road to medical relevance. Circadian rhythms… Show more

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Cited by 7 publications
(9 citation statements)
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References 131 publications
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“…Changes in circadian rhythms have also been associated with sleep quality and alertness in addition to mood and cognitive performance ( Garbarino et al, 2020 ). The Karolinska Sleepiness Scale (KSS) has been mainly used to measure both subjective sleepiness and alertness ( Shamsul et al, 2013 ; Chinazzo et al, 2019 ).…”
Section: The Human Response To Daylight: Evaluation Methodsmentioning
confidence: 99%
“…Changes in circadian rhythms have also been associated with sleep quality and alertness in addition to mood and cognitive performance ( Garbarino et al, 2020 ). The Karolinska Sleepiness Scale (KSS) has been mainly used to measure both subjective sleepiness and alertness ( Shamsul et al, 2013 ; Chinazzo et al, 2019 ).…”
Section: The Human Response To Daylight: Evaluation Methodsmentioning
confidence: 99%
“…Healthy ageing results in changes in circadian function in older adults, including reduced circadian rhythm amplitude in sleep–wake cycles, advanced circadian phase and earlier chronotype, more inter‐daily variability in activity cycles and altered circadian responses to light (Duncan, 2020; Popa‐Wagner et al, 2017). Older age is also associated with other changes in sleep such as reduced sleep efficiency, lower total sleep time, reduced REM sleep time, greater sleep onset latency, periodic limb movement and increased arousal index (Garbarino et al, 2021). Some of these changes may be linked to cellular and systemic changes in the circadian network; for example, ageing may be associated with a higher rate of cell loss in the SCN and pineal gland (Khuzhakhmetova et al, 2019), decreased neuroplasticity and altered neurophysiology of the SCN neuronal network (Buijink et al, 2020; Nakamura et al, 2011), and loss of photoreceptive retinal ganglion cells (ipRGCs) in the eye and their reduced projections to the SCN (Buijink & Michel, 2021).…”
Section: Circadian Rhythms In Older Age and Neurodegenerationmentioning
confidence: 99%
“…On German highways, about a quarter of all accidents occur because the driver falls asleep for a short time [123]. One of the reasons for fatigue is insufficient sleep.…”
Section: Chronic Insomniamentioning
confidence: 99%
“…Otherwise healthy older people often show poor sleep patterns; the duration of sleep is shortened and the waking time is extended. Circadian rhythms are altered, and deep sleep phases in particular are becoming significantly shorter [ 124 ]. Poor duration and quality of sleep can lead to fatigue and cognitive decline [ 125 , 126 ], both affecting the ability to drive.…”
Section: Sleep Disordersmentioning
confidence: 99%