Results 11 to 20 of about 40,241 (217)
Boundary-Dependent Sleep-Wake Dysregulation in Idiopathic Hypersomnia. [PDF]
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Mombelli S +13 more
europepmc +2 more sources
Background In humans, rapid eye movements (REM) density during REM sleep plays a prominent role in psychiatric diseases. Especially in depression, an increased REM density is a vulnerability marker for depression.
Fulda Stephany +5 more
doaj +1 more source
Evaluating the evidence surrounding pontine cholinergic involvement in REM sleep generation
Rapid eye movement (REM) sleep - characterized by vivid dreaming, motor paralysis, and heightened neural activity - is one of the fundamental states of the mammalian central nervous system.
Kevin P Grace, Richard L Horner
doaj +1 more source
Comparative Perspectives that Challenge Brain Warming as the Primary Function of REM Sleep
Summary: Rapid eye movement (REM) sleep is a paradoxical state of wake-like brain activity occurring after non-REM (NREM) sleep in mammals and birds.
Gianina Ungurean +4 more
doaj +1 more source
REM Sleep and Endothermy: Potential Sites and Mechanism of a Reciprocal Interference
Numerous data show a reciprocal interaction between REM sleep and thermoregulation. During REM sleep, the function of thermoregulation appears to be impaired; from the other hand, the tonic activation of thermogenesis, such as during cold exposure ...
Matteo Cerri +4 more
doaj +1 more source
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
Evening light environments can be designed to consolidate and increase the duration of REM-sleep
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 predictive propensity measure to enter REM sleep
IntroductionDuring sleep periods, most mammals alternate multiple times between rapid-eye-movement (REM) sleep and non-REM (NREM) sleep. A common theory proposes that these transitions are governed by an “hourglass-like” homeostatic need to enter REM ...
Alexander G. Ginsberg +6 more
doaj +1 more source
Is REM Density a Measure of Arousal during Sleep?
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
Melanin-concentrating hormone (MCH): a new sleep factor?
Neurons that utilize the neuropeptide melanin-concentrating hormone (MCH) as a neuromodulator are mainly located in the lateral hypothalamus and the incerto-hypothalamic area, and have widespread projections throughout the brain.
Pablo eTorterolo +2 more
doaj +1 more source

