Results 121 to 130 of about 410,492 (225)

Strong and Weak Episodic Memories Are Shaped by Multiple Cycles of NREM Spindles and REM Alpha Bursts

Journal of Sleep Research, EarlyView.
ABSTRACT Prior research has built up the notion that non‐rapid eye movement sleep (NREM) and rapid eye movement sleep (REM) are separately important for specific types of memory. However, growing evidence suggests that these sleep stages work in conjunction to jointly shape memory.
A. E. Shuster, E. A. McDevitt, S. C. Mednick   +2 more
wiley   +1 more source

Progress in elucidating the pathophysiological basis of nonrapid eye movement parasomnias: not yet informing therapeutic strategies

Nature and Science of Sleep, 2016
András Horváth,1,2 Anikó Papp,1 Anna Szűcs,1 1Department of Neurology, National Institute of Clinical Neurosciences, 2János Szentágothai Doctoral School of Neurosciences, Semmelweis University School of PhD Studies,
Horváth A, Papp A, Szűcs A
doaj  

A unified framework to model synaptic dynamics during the sleep-wake cycle.

PLoS Biology
Understanding synaptic dynamics during the sleep-wake cycle in the cortex is crucial yet remains controversial. The synaptic homeostasis hypothesis (SHY) suggests synaptic depression during non-rapid eye movement (NREM) sleep, while other studies report ...
Fukuaki L Kinoshita, Rikuhiro G Yamada, Koji L Ode, Hiroki R Ueda   +3 more
doaj   +1 more source

Sodium Oxybate Alters Sleep Architecture and Reduces Emotional Selectivity in Memory‐Related Responses

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep supports memory consolidation. Non‐rapid eye movement (NREM) and rapid eye movement (REM) sleep have been proposed to support, respectively, declarative memory consolidation and the integration of the memory affective dimension. Here, we used sodium oxybate (SXB) to modify the NREM/REM proportion during one sleep night and assessed ...
Laure Colin, Kinga Igloi, Alison Montagrin, Samika Kumar, Jeremy Hofmeister, Markus Gschwind, Sophie Schwartz, Virginie Sterpenich   +7 more
wiley   +1 more source

How Mental Concepts Shape Sleep: Introducing the Mental Concept Reactivation Hypothesis of Sleep

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep problems affect a substantial proportion of individuals, and negative thoughts, rumination, and worry are considered key factors underlying persistence and severity. While extensive research has examined how these states disrupt sleep before falling asleep, much less is known about how mental concepts, including thoughts, expectations ...
Anna Zoé Wick, Björn Rasch
wiley   +1 more source

Regulation of REM sleep in mice: The role of dopamine and serotonin function in the basolateral amygdala

Neuroscience Research
Animals have a sleep cycle that involves the repetitive occurrence of non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. In a previous study, we discovered that a transient increase in dopamine (DA) levels in the basolateral amygdala
Emi Hasegawa, Yulong Li, Takeshi Sakurai
doaj   +1 more source

The Relative Contributions of Arousal Presence and Arousal Intensity to Post‐Respiratory‐Event Ventilation in Obstructive Sleep Apnea

Journal of Sleep Research, EarlyView.
In obstructive sleep apnea, the breathing after each obstructive event is affected by cortical arousal. Across two cohorts (N = 1781 and N = 67), arousal presence raised post‐event ventilation by 17–30%Eupnea, with each intensity step adding 1–4%Eupnea, independent of chemoreflex drive.
Junyan Zhang, Dwayne Mann, Timo Leppänen, Ali Azarbarzin, Scott Sands, Juha Töyräs, Philip Terrill   +6 more
wiley   +1 more source

Respiration in NREM and REM sleep after upper airway surgery for obstructive sleep apnoea

, 1995
To verify whether upper airway surgery in obstructive sleep apnoea syndrome affects differently respiration in NREM and REM sleep, 22 patients were studied by polysomnography before and three months after surgical treatment.
Gallina S, Marrone O, Insalaco G, Bonsignore MR, Cimino M, Speciale R, Salvaggio A   +6 more
core  

A Multimodal Machine Learning Model for Framingham Risk Score–Based Cardiovascular Risk Stratification in Patients With Obstructive Sleep Apnea

Journal of Sleep Research, EarlyView.
ABSTRACT Machine learning provides a powerful tool to capture complex, nonlinear patterns in biomedical data and enhance precision risk stratification. In this study, we applied a multilayer perceptron (MLP) framework to classify Framingham Risk Score–based cardiovascular risk categories in patients with obstructive sleep apnea (OSA).
Feng Zhao, Yin Li, Chenyang Li, Huajun Xu, Enhui Zhou, Weijun Huang, Huaming Zhu, Jian Guan, Hongliang Yi, Jianyin Zou, Nutan Chen   +10 more
wiley   +1 more source

Sleep deprivation in the rat: XX. Differences in wake and sleep temperatures during recovery

, 1995
We examined the relationship between wake and sleep peritoneal temperature (T(ip)) during recovery from short-term (five rats, 5 days of deprivation) and long-term (nine rats, 14-21 days) total sleep deprivation (TSD). Mammalian body temperature normally
Feng, P. F., Bergmann, B. M., Rechtschaffen, A., Obermeyer, W., Tsai, L. L., Shaw, P., Zenko, C. E.   +6 more
core   +1 more source