Results 41 to 50 of about 696,853 (368)

Daytime REM sleep affects emotional experience but not decision choices in moral dilemmas [PDF]

open access: yes, 2017
Moral decision-making depends on the interaction between automatic emotional responses and rational cognitive control. A natural emotional regulator state seems to be sleep, in particular rapid eye movement (REM) sleep.
Cellini, Nicola   +3 more
core   +2 more sources

Clinical characteristics of insomnia in perimenopausal women: a clinical study based on polysomnography

open access: yesDi-san junyi daxue xuebao, 2021
Objective To investigate the clinical characteristics and influencing factors of insomnia in perimenopausal women based on polysomnography (PSG). Methods A total of 52 perimenopausal women admitted to our psychological clinic due to insomnia were ...
ZHAO Yuan, CHEN Qingqiu, JIANG Chenggang
doaj   +1 more source

Are there sleep-specific phenotypes in patients with chronic fatigue syndrome? A cross-sectional polysomnography analysis [PDF]

open access: yes, 2013
Objectives: Despite sleep disturbances being a central complaint in patients with chronic fatigue syndrome (CFS), evidence of objective sleep abnormalities from over 30 studies is inconsistent.
Deary, Vincent   +3 more
core   +1 more source

REM sleep–active MCH neurons are involved in forgetting hippocampus-dependent memories

open access: yesScience, 2019
A brain pathway for active forgetting Sleep affects memories via several mechanisms. Izawa et al. identified a possible new pathway in the brain: REM sleep–active hypothalamic melanin-concentrating hormone (MCH)–producing neurons, which, among others ...
Shuntaro Izawa   +12 more
semanticscholar   +1 more source

Is REM Density a Measure of Arousal during Sleep?

open access: yesBrain Sciences, 2023
Rapid eye movements (REMs), an expression of REM sleep phasic activity, occur against a stable background of cortical desynchronization and the absence of axial tone. The significance of REMs during the sleep period was initially attributed to the mental
Giuseppe Barbato
doaj   +1 more source

Evening light environments can be designed to consolidate and increase the duration of REM-sleep

open access: yesScientific Reports, 2022
Evening exposure to short-wavelength light has disruptive effects on circadian rhythms and sleep. These effects can be mitigated by blocking short-wavelength (blue) frequencies, which has led to the development of evening blue-depleted light environments
Daniel Vethe   +13 more
doaj   +1 more source

A continuum model for the dynamics of the phase transition from slow-wave sleep to REM sleep [PDF]

open access: yes, 2010
Previous studies have shown that activated cortical states (awake and rapid eye-movement (REM) sleep), are associated with increased cholinergic input into the cerebral cortex.
Li, Xiaoli   +5 more
core   +2 more sources

Optogenetic activation of cholinergic neurons in the PPT or LDT induces REM sleep [PDF]

open access: yes, 2014
Rapid eye movement (REM) sleep is an important component of the natural sleep/wake cycle, yet the mechanisms that regulate REM sleep remain incompletely understood.
Brown, Emery N.   +12 more
core   +1 more source

Regulation of REM and Non-REM Sleep by Periaqueductal GABAergic Neurons

open access: yesNature Communications, 2018
Mammalian sleep consists of distinct rapid eye movement (REM) and non-REM (NREM) states. The midbrain region ventrolateral periaqueductal gray (vlPAG) is known to be important for gating REM sleep, but the underlying neuronal mechanism is not well ...
F. Weber   +6 more
semanticscholar   +1 more source

Effects of social stimuli on sleep in mice: non-rapid-eye-movement (NREM) sleep is promoted by aggressive interaction but not by sexual interaction [PDF]

open access: yes, 2001
Sleep is generally considered to be a process of recovery from prior wakefulness. In addition to being affected by the duration of the waking period, sleep architecture and sleep EEG also depend on the quality of wakefulness.
Meerlo, Peter,, Turek, Fred W.,
core   +1 more source

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