keyword
MENU ▼
Read by QxMD icon Read
search

Slow wave sleep

keyword
https://www.readbyqxmd.com/read/28212689/sleep-complaints-and-sleep-architecture-in-children-with-idiopathic-central-sleep-apnea
#1
Neepa Gurbani, Stijn L Verhulst, Chee Tan, Narong Simakajornboon
STUDY OBJECTIVES: Idiopathic central sleep apnea (ICSA) is categorized as a type of nonhypercapnic central sleep apnea (CSA). Recurrent cessation and resumption of respiration leads to sleep fragmentation, which causes excessive daytime sleepiness, frequent nocturnal awakenings, or both. ICSA has been described in the adult population but there is limited information in children. The purpose of this study was to describe clinical manifestations and polysomnographic findings in children with ICSA...
April 14, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28173758/sleep-wake-movement-velocities-trajectories-and-micro-arousals-during-maturation-in-rats
#2
Gideon Gradwohl, Nadja Olini, Reto Huber
BACKGROUND: Sleep is regulated by two main processes. The circadian process provides a 24-h rhythm and the homeostatic process reflects sleep pressure, which increases in the course of wakefulness and decreases during sleep. Both of these processes undergo major changes during development. For example, sleep homeostasis, measured by means of electroencephalogram (EEG) slow-wave activity (SWA, EEG power between 0.5 and 4.5 Hz), peaks around puberty and decreases during adolescence. In humans and rats these changes have been related to cortical maturation...
February 7, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28168294/different-effects-of-sleep-deprivation-and-torpor-on-eeg-slow-wave-characteristics-in-djungarian-hamsters
#3
V V Vyazovskiy, S Palchykova, P Achermann, I Tobler, T Deboer
No abstract text is available yet for this article.
February 7, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28163508/study-of-sleep-disorders-and-polysomnographic-evaluation-among-primary-chronic-daily-headache-patients
#4
Rajesh Verma, Kamal Kumar Nagar, Ravindra Kumar Garg, Ravi Uniyal, Praveen Kumar Sharma, Sweta Pandey
OBJECTIVE: Studies related to sleep disorders and polysomnography (PSG) among chronic daily headache patients are rare. We studied this and compared chronic migraine (CM) with chronic tension-type headache. METHODS: Eighty-three patients were recruited. They were evaluated by semi-structured interview, headache, and sleep diaries along with Epworth Sleepiness Scale score and insomnia symptom score. Overnight PSG was performed and data compared. RESULTS: Chronic tension-type headache was more common than CM, both having female preponderance...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28162142/depressive-symptoms-are-associated-with-objectively-measured-sleep-parameters-in-kidney-transplant-recipients
#5
Katalin Z Ronai, Andras Szentkiralyi, Alpar S Lazar, Akos Ujszaszi, Csilla Turanyi, Ferenc Gombos, Istvan Mucsi, Robert Bodizs, Miklos Z Molnar, Marta Novak
STUDY OBJECTIVES: Both depression and sleep complaints are very prevalent among kidney transplant (kTx) recipients. However, details of the complex relationship between sleep and depression in this population are not well documented. Thus, we investigated the association between depressive symptoms and sleep macrostructure parameters among prevalent kTx recipients. METHODS: Ninety-five kTx recipients participated in the study (54 males, mean age 51 ± 13 y, body mass index 26 ± 4 kg/m2, estimated glomerular filtration rate 53 ± 19 ml/min/1...
January 31, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28162033/high-density-electroencephalographic-recordings-during-sleep-in-children-and-adolescents-with-acquired-brain-injury
#6
Anne-Laure Mouthon, Andreas Meyer-Heim, Salome Kurth, Maya Ringli, Fiona Pugin, Hubertus J A van Hedel, Reto Huber
BACKGROUND: Acquired brain injuries (ABI) such as traumatic brain injury (TBI) or stroke can result in motor, language, or cognitive impairments. Although a considerable number of studies have investigated functional recovery, underlying brain reorganization remains poorly understood. Accumulating evidence indicates that plastic processes in the brain are linked to changes in electroencephalographic (EEG) slow wave activity (SWA) during deep sleep (EEG spectral power 1-4.5 Hz). OBJECTIVE: We investigated sleep SWA in children and adolescents with ABI...
February 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28158285/asynchronous-ripple-oscillations-between-left-and-right-hippocampi-during-slow-wave-sleep
#7
Claudio Villalobos, Pedro E Maldonado, José L Valdés
Spatial memory, among many other brain processes, shows hemispheric lateralization. Most of the published evidence suggests that the right hippocampus plays a leading role in the manipulation of spatial information. Concurrently in the hippocampus, memory consolidation during sleep periods is one of the key steps in the formation of newly acquired spatial memory traces. One of the most characteristic oscillatory patterns in the hippocampus are sharp-wave ripple (SWR) complexes. Within this complex, fast-field oscillations or ripples have been demonstrated to be instrumental in the memory consolidation process...
2017: PloS One
https://www.readbyqxmd.com/read/28123667/sleep-pattern-and-locomotor-activity-are-impaired-by-doxorubicin-in-non-tumor-bearing-rats
#8
Fabio Santos Lira, Andrea Maculano Esteves, Gustavo Duarte Pimentel, José Cesar Rosa, Miriam Kannebley Frank, Melise Oliveira Mariano, Josiane Budni, João Quevedo, Ronaldo Vagner Dos Santos, Marco Túlio de Mello
PURPOSE: We sought explore the effects of doxorubicin on sleep patterns and locomotor activity. To investigate these effects, two groups were formed: a control group and a Doxorubicin (DOXO) group. METHODS: Sixteen rats were randomly assigned to either the control or DOXO groups. The sleep patterns were examined by polysomnographic recording and locomotor activity was evaluated in an open-field test. RESULTS: In the light period, the total sleep time and slow wave sleep were decreased, while the wake after sleep onset and arousal were increased in the DOXO group compared with the control group (p<0...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28123663/a-hypothetic-aging-pathway-from-skin-to-hypothalamic-suprachiasmatic-nucleus-via-slow-wave-sleep
#9
Zi-Jian Cai
Many observations have demonstrated that the hypothalamic neuroendocrine change determines the chronological sequence of aging in mammals. However, it remains uncertain on the mechanism to account for the hypothalamic aging manifestations. In this article, it is pointed out that, as constantly exposed to sunshine and oxygen, the skin would undergo both telomere-shortening and oxidative senescent processes. The senescent alterations of skin, such as attenuation in electrodermal activities, would in turn reduce the emotional responses and memories...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28117479/the-role-of-physical-exercise-in-obstructive-sleep-apnea
#10
Flávio Maciel Dias de Andrade, Rodrigo Pinto Pedrosa
Obstructive sleep apnea (OSA) is a common clinical condition, with a variable and underestimated prevalence. OSA is the main condition associated with secondary systemic arterial hypertension, as well as with atrial fibrillation, stroke, and coronary artery disease, greatly increasing cardiovascular morbidity and mortality. Treatment with continuous positive airway pressure is not tolerated by all OSA patients and is often not suitable in cases of mild OSA. Hence, alternative methods to treat OSA and its cardiovascular consequences are needed...
November 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28115003/normal-sleep-on-mechanical-ventilation-in-adult-patients-with-congenital-central-alveolar-hypoventilation-ondine-s-curse-syndrome
#11
Valérie Attali, Christian Straus, Michel Pottier, Marie-Annick Buzare, Capucine Morélot-Panzini, Isabelle Arnulf, Thomas Similowski
BACKGROUND: The purpose of this study was to describe the sleep structure (especially slow wave sleep) in adults with congenital central hypoventilation syndrome (CCHS), a rare genetic disease due to mutations in the PHOX2B gene. Fourteen patients aged 23 (19.0; 24.8) years old (median [1(rst)-3rd quartiles]) with CCHS underwent a sleep interview and night-time attended polysomnography with their ventilatory support. Their sleep variables were compared to those collected in 15 healthy control subjects matched for age, sex and body mass index...
January 23, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28111743/does-sleep-benefit-memory-consolidation-in-children-with-focal-epilepsy
#12
Samantha Chan, Ronit Pressler, Stewart G Boyd, Torsten Baldeweg, J Helen Cross
OBJECTIVE: Children with epilepsy have high rates of both cognitive impairment and sleep disruption. It is thus assumed that sleep-dependent memory consolidation is vulnerable to ongoing epileptic activity, but direct evidence of this is limited. METHODS: We performed a within-subject comparison of memory retention across intervals of wake or overnight sleep. Healthy children (n = 21, 6-16 years, 12 female) and children with focal epilepsy (n = 22, 6-16 years, 9 female) performed verbal and visuospatial memory tasks under each condition...
January 23, 2017: Epilepsia
https://www.readbyqxmd.com/read/28100730/sleep-to-remember
#13
Susan J Sara
Scientific investigation into the possible role of sleep in memory consolidation began with the early studies of Jenkins and Dallenbach (1924). Despite nearly a century of investigation with a waxing and waning of interest, the role of sleep in memory processing remains controversial and elusive. This review provides the historical background for current views and considers the relative contribution of two sleep states, rapid eye movement sleep and slow-wave sleep, to offline memory processing. The sequential hypothesis, until now largely ignored, is discussed, and recent literature supporting this view is reviewed...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28093830/age-affects-sleep-microstructure-more-than-sleep-macrostructure
#14
Johanna F A Schwarz, Torbjörn Åkerstedt, Eva Lindberg, Georg Gruber, Håkan Fischer, Jenny Theorell-Haglöw
It is well known that the quantity and quality of physiological sleep changes across age. However, so far the effect of age on sleep microstructure has been mostly addressed in small samples. The current study examines the effect of age on several measures of sleep macro- and microstructure in 211 women (22-71 years old) of the 'Sleep and Health in Women' study for whom ambulatory polysomnography was registered. Older age was associated with significantly lower fast spindle (effect size f(2)  = 0.32) and K-complex density (f(2)  = 0...
January 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28078839/widespread-membrane-potential-changes-and-cardiorespiratory-synchronization-involved-in-anxiety-and-sleep-wake-transitions
#15
R Jerath, S M Cearley, M Jensen
Located within the ascending reticular activating system are nuclei which release neurotransmitters such as acetylcholine, serotonin, dopamine, and norepinephrine. These nuclei have widespread projections that extend into the limbic system and throughout cortex. Activation of these neurotransmitters during awake states leads to arousal, while inhibition leads to the loss of consciousness experienced during slow-wave sleep. Previously, we proposed a mechanism in which cardiorespiratory synchronization may underlie the widespread hyperpolarization that occurs throughout the brain during slow-wave sleep...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28057087/sleep-homeostatic-and-waking-behavioral-phenotypes-in-egr3-deficient-mice-associated-with-serotonin-receptor-5-ht2-deficits
#16
Janne Grønli, William C Clegern, Michelle A Schmidt, Rahmi S Nemri, Michael J Rempe, Amelia L Gallitano, Jonathan P Wisor
STUDY OBJECTIVE: The expression of the immediate early gene early growth response 3 (Egr3) is a functional marker of brain activity including responses to novelty, sustained wakefulness, and sleep. We examined the role of this gene in regulating wakefulness and sleep. METHODS: Electroencephalogram/electromyogram (EEG/EMG) were recorded in Egr3-/- and wild-type (WT) mice during 24 h baseline, 6 h sleep disruption and 6 h recovery. Serotonergic signaling was assessed with 6 h EEG/EMG recordings after injections of nonselective 5-HT2 antagonist (clozapine), selective 5-HT2 antagonists (5-HT2A; MDL100907 and 5-HT2BC; SB206553) and a cocktail of both selective antagonists, administered in a randomized order to each animal...
December 1, 2016: Sleep
https://www.readbyqxmd.com/read/28053819/thalamic-atrophy-contributes-to-low-slow-wave-sleep-in-neuromyelitis-optica-spectrum-disorder
#17
Lei Su, Yujuan Han, Rong Xue, Kristofer Wood, Fu-Dong Shi, Yaou Liu, Ying Fu
Slow wave sleep abnormality has been reported in neuromyelitis optica spectrum disorder (NMOSD), but mechanism for such abnormality is unknown. To determine the structural defects in the brain that account for the decrease of slow wave sleep in NMOSD patients. Thirty-three NMOSD patients and 18 matched healthy controls (HC) were enrolled. Polysomnography was used to monitor slow wave sleep and three-dimensional T1-weighted MRIs were obtained to assess the alterations of grey matter volume. The percentage of deep slow wave sleep decreased in 93% NMOSD patients...
December 2016: Aging and Disease
https://www.readbyqxmd.com/read/28050973/behavioral-state-classification-in-epileptic-brain-using-intracranial-electrophysiology
#18
Vaclav Kremen, Juliano J Duque, Benjamin H Brinkmann, Brent M Berry, Michal T Kucewicz, Fatemeh Khadjevand, Jamie Van Gompel, Matt Stead, Erik K St Louis, Gregory A Worrell
OBJECTIVE: Automated behavioral state classification can benefit next generation implantable epilepsy devices. In this study we explored the feasibility of automated awake (AW) and slow wave sleep (SWS) classification using wide bandwidth intracranial EEG (iEEG) in patients undergoing evaluation for epilepsy surgery. APPROACH: Data from seven patients (age [Formula: see text], 4 women) who underwent intracranial depth electrode implantation for iEEG monitoring were included...
January 4, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28045858/diagnosis-of-electrical-status-epilepticus-during-slow-wave-sleep-with-100-seconds-of-sleep
#19
Amanda B Weber, Dara V Albert, Han Yin, Timothy P Held, Anup D Patel
PURPOSE: Strategies for diagnosing electrical status epilepticus during slow-wave sleep (ESES) vary among interpreting neurologists. Our aim was to evaluate if the spike-wave index (SWI) for the first 100 seconds of sleep is reflective of the SWI when compared with a conventional method. METHODS: We reviewed EEGs from 2005 to 2011 that were considered diagnostic of ESES based on unspecified methods. The SWI for the first nonrapid eye movement sleep cycle (long method) was calculated by two neurophysiologists...
January 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28045040/the-fall-of-sleep-k-complex-in-alzheimer-disease
#20
Luigi De Gennaro, Maurizio Gorgoni, Flaminia Reda, Giulia Lauri, Ilaria Truglia, Susanna Cordone, Serena Scarpelli, Anastasia Mangiaruga, Aurora D'atri, Giordano Lacidogna, Michele Ferrara, Camillo Marra, Paolo Maria Rossini
Although a slowing of electroencephalographic (EEG) activity during wakefulness and -to some extent- sleep of Alzheimer disease (AD) patients (i.e., increased slow-frequency activity) was documented, recent findings in healthy elderly show a decreased 0.6-1 Hz slow wave activity (SWA) during NREM, which was associated to β-amyloid deposition and impaired hippocampal memory consolidation. We hypothesize that the apparent contradiction may be explained by the partial overlap between 0.6-1 Hz EEG activity and K-Complex (KC)...
January 3, 2017: Scientific Reports
keyword
keyword
36211
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"