Showing papers in "Neurobiology of Sleep and Circadian Rhythms in 2021"

TL;DR: In this article, the probabilities of momentary sleep stages, represented as hypnodensity graphs and then computing vectorial cross-correlations of different EEG channels, were determined.

TL;DR: In this article, the effects of acute sleep deprivation on sleep duration and EEG activity in male and female rodents were investigated, and the contribution of the female estrous cycle to the observed differences between males and females was described.

TL;DR: In this paper, the authors investigated changes in the temporal profiles of circulating cytokines important for priming and restraining the immune response to infectious challenges from night shift work, but not by way of a 24-h constant routine of continuous wakefulness devoid of behavioral or environmental influences.

TL;DR: The magnitude of the stimulus to the biological clock will depend upon the distribution of circadian phototransduction circuits across the retinae and the spatial distribution of luminous stimuli in the environment.

TL;DR: In this article, the authors employed in vivo real-time monitoring of multiple unit neural activity (MUA) in the dorsal striatum of freely moving mice to demonstrate that the striatum exhibits robust diurnal and circadian rhythms in MUA that peak in the night.

TL;DR: In this article, the authors play the Devil's advocate and assume the title of High Contrarian to challenge long-standing ideas about sleep, including the idea that sleep is regulated by a mysterious "homeostat" that determines sleep need based on prior wake time.

TL;DR: In this paper, the authors examined the relationship of actigraphy measured rest-activity circadian rhythm with mild cognitive impairment (MCI) or cognitive impairment in Hong Kong healthy community-dwelling older adults.

TL;DR: In this paper, the authors investigate whether varying only the spatial distribution of luminous stimuli in the environment while maintaining a constant spectrally weighted irradiance at the eye could influence nocturnal melatonin suppression.

TL;DR: In this article, a proof-of-concept study was conducted to evaluate the effect and applicability of a dynamic light intervention to improve rest-activity patterns in cognitively impaired, institutionalized, older adults.

TL;DR: In this paper, the authors compared the polysomnographic micro-architecture of rapid eye movement (REM) sleep between WUS and daytime stroke (DTS).

TL;DR: In this article, the authors examined several physiological and medication factors that may be responsible for the deficiency in Lo Deep sleep, or slow oscillations, in the PTSD population compared to healthy control sleepers.

TL;DR: This article showed that both NREM and REM sleep are functional responses to prior wake, and their cycling is controlled by a fixed period oscillator, and further research showed NREM sleep is in a homeostatic relationship.