Results 21 to 30 of about 370,906 (288)

Seasonal Variation in the Responsiveness of the Melanopsin System to Evening Light: Why We Should Report Season When Collecting Data in Human Sleep and Circadian Studies

open access: yesClocks & Sleep, 2023
It is well known that variations in light exposure during the day affect light sensitivity in the evening. More daylight reduces sensitivity, and less daylight increases it.
Isabel Schöllhorn   +3 more
doaj   +1 more source

Sleep stage and skin temperature regulation during night‐sleep in winter [PDF]

open access: yesPsychiatry and Clinical Neurosciences, 1999
To clarify the thermally comfortable environment for satisfied sleep, we investigated the relationship between skin temperatures and sleep stages during night‐sleep in winter, summer and autumn. Four healthy young females served as the subjects. The experiments were performed in a climate chamber under three conditions: at 13°C‐RH70% with futon and ...
H, Kubo, T, Yanase, H, Akagi
openaire   +2 more sources

Global implications of evidence ‘biased’ practice: management of the third stage of labour [PDF]

open access: yes, 2008
Increasing attention is being paid to the promotion of clinical and cost-effective care informed by the highest level of evidence to ensure health outcomes are optimised and access to health care is equitable.
Confidential Enquiry into Maternal and Child Health (CEMACH)   +10 more
core   +1 more source

On Boredom in Winter Sleep

open access: yesTrakya Üniversitesi Edebiyat Fakültesi Dergisi, 2019
In this work, we focus on the film Winter Sleep (2014) by Nuri Bilge Ceylan, whose works place special emphasis on various aspects of boredom. As one of the main figures in slow cinema, Ceylan, in this influential work of art, enable us to explore boredom through three main characters: Aydın (Haluk Bilginer), Nihal (Melisa Sözen) and Necla (Demet Akbağ)
Elif Gezgın, Argun Abrek Canbolat
  +7 more sources

Seasonal aspects of sleep in the Djungarian hamster

open access: yesBMC Neuroscience, 2003
Background Changes in photoperiod and ambient temperature trigger seasonal adaptations in the physiology and behaviour of many species, including the Djungarian hamster. Exposure of the hamsters to a short photoperiod and low ambient temperature leads to
Deboer Tom   +2 more
doaj   +1 more source

A PERIOD3 variant causes a circadian phenotype and is associated with a seasonal mood trait. [PDF]

open access: yes, 2016
In humans, the connection between sleep and mood has long been recognized, although direct molecular evidence is lacking. We identified two rare variants in the circadian clock gene PERIOD3 (PER3-P415A/H417R) in humans with familial advanced sleep phase ...
Fu, Ying-Hui   +15 more
core   +1 more source

Exploring the Impact of Natural Light Exposure on Sleep of Healthy Older Adults: A Field Study

open access: yesJournal of Daylighting, 2018
Studies among people with dementia demonstrated that the sleep quality and rhythm improves significantly when people are exposed to ambient bright light.
Mariëlle P. J. Aarts   +3 more
doaj   +1 more source

Seasonal Changes in Sleep Duration in African American and African College Students Living In Washington, D.C.

open access: yesThe Scientific World Journal, 2007
Duration of nocturnal melatonin secretion, a marker of “biological night” that relates to sleep duration, is longer in winter than in summer in patients with seasonal affective disorder (SAD), but not in healthy controls.
Janna Volkov   +7 more
doaj   +1 more source

Why We Sleep: A Hypothesis for an Ultimate or Evolutionary Origin for Sleep and Other Physiological Rhythms

open access: yesJournal of Circadian Rhythms, 2020
Although sleep is ubiquitous, its evolutionary purpose remains elusive. Though every species of animal, as well as many plants sleep, theories of its origin are purely physiological, e.g. to conserve energy, make repairs or to consolidate learning.
Andrew S. Freiberg
doaj   +1 more source

Inclusion of window opening habits in a window model based on activity and occupancy patterns [PDF]

open access: yes, 2019
The occupants’ window opening behaviour can have a substantial influence on the indoor climate and the energy use in low energy dwellings. In literature, most window opening models are based on outdoor and/or indoor climate variables.
Delghust, Marc   +3 more
core   +1 more source

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