keyword
MENU ▼
Read by QxMD icon Read
search

Slow wave sleep

keyword
https://www.readbyqxmd.com/read/27923431/using-oscillating-sounds-to-manipulate-sleep-spindles
#1
James W Antony, Ken A Paller
STUDY OBJECTIVES: EEG oscillations known as sleep spindles have been linked with various aspects of cognition, but the specific functions they signal remain controversial. Two types of EEG sleep spindle have been distinguished: slow spindles at 11-13.5 Hz and fast spindles at 13.5-16 Hz. Slow spindles exhibit a frontal scalp topography, whereas fast spindles exhibit a posterior scalp topography and have been preferentially linked with memory consolidation during sleep. To advance understanding beyond that provided from correlative studies of spindles, we aimed to develop a new method to systematically manipulate spindles...
November 28, 2016: Sleep
https://www.readbyqxmd.com/read/27923429/effects-of-tiagabine-on-slow-wave-sleep-and-arousal-threshold-in-patients-with-obstructive-sleep-apnea
#2
Luigi Taranto-Montemurro, Scott A Sands, Bradley A Edwards, Ali Azarbarzin, Melania Marques, Camila de Melo, Danny J Eckert, David P White, Andrew Wellman
STUDY OBJECTIVES: Obstructive sleep apnea (OSA) severity is markedly reduced during slow wave sleep (SWS) even in patients with a severe disease. The reason for this improvement is uncertain but likely relates to non-anatomical factors (i.e. reduced arousability, chemosensitivity, and increased dilator muscle activity). The anticonvulsant tiagabine produces a dose-dependent increase in SWS in subjects without OSA. This study aimed to test the hypothesis that tiagabine would reduce OSA severity by raising the overall arousal threshold during sleep...
November 28, 2016: Sleep
https://www.readbyqxmd.com/read/27923187/sleep-eeg-patterns-in-infants-with-congenital-zika-virus-syndrome
#3
Maria Durce Costa Gomes Carvalho, Demócrito de Barros Miranda-Filho, Vanessa van der Linden, Paula Fabiana Sobral, Regina Coeli Ferreira Ramos, Maria Ângela Wanderley Rocha, Marli Tenório Cordeiro, Sarah Pinheiro de Alencar, Magda Lahorgue Nunes
OBJECTIVES: To describe sleep EEG patterns of neonates, and infants with microcephaly due to congenital Zika virus (ZikV) syndrome. METHODS: A descriptive case series of EEGs performed in a cohort of neonates with microcephaly monitored from October 2015 to February 2016 at a University Hospital in Northeast Brazil. Infants were investigated following an established protocol that includes EEG, neuroimaging studies, PCR and specific antibodies for ZikV detection...
November 14, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27913167/gamma-band-directional-interactions-between-basal-forebrain-and-visual-cortex-during-wake-and-sleep-states
#4
Jayakrishnan Nair, Arndt-Lukas Klaassen, Jordan Poirot, Alexei Vyssotski, Björn Rasch, Gregor Rainer
The basal forebrain (BF) is an important regulator of cortical excitability and responsivity to sensory stimuli, and plays a major role in wake-sleep regulation. While the impact of BF on cortical EEG or LFP signals has been extensively documented, surprisingly little is known about LFP activity within BF. Based on bilateral recordings from rats in their home cage, we describe endogenous LFP oscillations in the BF during quiet wakefulness, rapid eye movement (REM) and slow wave sleep (SWS) states. Using coherence and Granger causality methods, we characterize directional influences between BF and visual cortex (VC) during each of these states...
November 29, 2016: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/27909987/orexin-ox2-receptor-antagonists-as-sleep-aids
#5
Laura H Jacobson, Sui Chen, Sanjida Mir, Daniel Hoyer
The discovery of the orexin system represents the single major progress in the sleep field of the last three to four decades. The two orexin peptides and their two receptors play a major role in arousal and sleep/wake cycles. Defects in the orexin system lead to narcolepsy with cataplexy in humans and dogs and can be experimentally reproduced in rodents. At least six orexin receptor antagonists have reached Phase II or Phase III clinical trials in insomnia, five of which are dual orexin receptor antagonists (DORAs) that target both OX1 and OX2 receptors (OX2Rs)...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27903437/the-impact-of-sleep-on-true-and-false-memory-across-long-delays
#6
Enmanuelle Pardilla-Delgado, Jessica D Payne
While the influence of sleep on memory has a long history, sleep's role in the formation of false memories is less clear. Moreover, virtually nothing is known about the development of false memories beyond delays of about 12 hours. Here, for the first time, we assess post-sleep development of true and false memories across longer delay intervals of 24 and 48 hours. Although technically a false memory, remembering information that is related to the theme, or gist, of an experience can be considered an adaptive process...
November 26, 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27889818/somatosensory-reflex-seizures-in-a-child-with-epilepsy-related-to-novel-scn1a-mutation
#7
Pinar Arican, Nihal Olgac Dundar, Dilek Cavusoglu, Taha Resid Ozdemır, Pinar Gencpinar
INTRODUCTION: Mutations in SCN1A have been reported in patients with different types of epilepsy, including generalized epilepsy with febrile seizures plus, severe myoclonic epilepsy in infancy, malignant migrating partial seizures in infancy, and other infantile epileptic encephalopathies. CASE REPORT: We report a case of a 10-month-old girl presented with reflex epileptic seizures provoked by somatosensory stimuli with a novel de novo mutation of SCN1A gene. She was observed to have seizures with eye deviation, unresponsiveness provoked by somatosensory stimuli of the face...
November 26, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27889439/when-a-gold-standard-isn-t-so-golden-lack-of-prediction-of-subjective-sleep-quality-from-sleep-polysomnography
#8
Katherine A Kaplan, Jason Hirshman, Beatriz Hernandez, Marcia L Stefanick, Andrew R Hoffman, Susan Redline, Sonia Ancoli-Israel, Katie Stone, Leah Friedman, Jamie M Zeitzer
BACKGROUND: Reports of subjective sleep quality are frequently collected in research and clinical practice. It is unclear, however, how well polysomnographic measures of sleep correlate with subjective reports of prior-night sleep quality in elderly men and women. Furthermore, the relative importance of various polysomnographic, demographic and clinical characteristics in predicting subjective sleep quality is not known. We sought to determine the correlates of subjective sleep quality in older adults using more recently developed machine learning algorithms that are suitable for selecting and ranking important variables...
November 24, 2016: Biological Psychology
https://www.readbyqxmd.com/read/27880966/age-dependency-of-location-of-epileptic-foci-in-continuous-spike-and-waves-during-sleep-a-parallel-to-the-posterior-anterior-trajectory-of-slow-wave-activity
#9
Bigna Katrin Bölsterli Heinzle, Thomas Bast, Hanne Critelli, Reto Huber, Bernhard Schmitt
Background Epileptic encephalopathy with continuous spike-and-waves during sleep (CSWS) occurs during childhood and is characterized by an activation of spike wave complexes during slow wave sleep. The location of epileptic foci is variable, as is etiology. A relationship between the epileptic focus and age has been shown in various focal epilepsies following a posterior-anterior trajectory, and a link to brain maturation has been proposed.We hypothesize that in CSWS, maximal spike wave activity, corresponding to the epileptic focus, is related to age and shows a posterior-anterior evolution...
November 23, 2016: Neuropediatrics
https://www.readbyqxmd.com/read/27866039/sleep-eeg-maps-the-functional-neuroanatomy-of-executive-processes-in-adolescents-born-very-preterm
#10
Flavia M Wehrle, Beatrice Latal, Ruth L O'Gorman, Cornelia F Hagmann, Reto Huber
Executive function deficits are among the most frequent sequela of very preterm birth but the underlying neuronal mechanisms are not fully understood. We used high-density electroencephalography (EEG) recordings during sleep to assess alterations in the functional neuroanatomy of executive processes in adolescents born very preterm. The topographical distribution of sleep slow wave activity (SWA; 1-4.5 Hz EEG power) has previously been used to map cognitive abilities and is known to reflect the intensity of the prior use of the respective neuronal networks...
October 28, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27864086/targeted-memory-reactivation-of-newly-learned-words-during-sleep-triggers-rem-mediated-integration-of-new-memories-and-existing-knowledge
#11
Jakke Tamminen, Matthew A Lambon Ralph, Penelope A Lewis
Recent memories are spontaneously reactivated during sleep, leading to their gradual strengthening. Whether reactivation also mediates the integration of new memories with existing knowledge is unknown. We used targeted memory reactivation (TMR) during slow-wave sleep (SWS) to selectively cue reactivation of newly learned spoken words. While integration of new words into their phonological neighbourhood was observed in both cued and uncued words after sleep, TMR-triggered integration was predicted by the time spent in rapid eye movement (REM) sleep...
November 15, 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27859029/reactivation-of-seizure-related-changes-to-interictal-spike-shape-and-synchrony-during-postseizure-sleep-in-patients
#12
Mark R Bower, Michal T Kucewicz, Erik K St Louis, Fredric B Meyer, W Richard Marsh, Matt Stead, Gregory A Worrell
OBJECTIVE: Local field potentials (LFPs) arise from synchronous activation of millions of neurons, producing seemingly consistent waveform shapes and relative synchrony across electrodes. Interictal spikes (IISs) are LFPs associated with epilepsy that are commonly used to guide surgical resection. Recently, changes in neuronal firing patterns observed in the minutes preceding seizure onset were found to be reactivated during postseizure sleep, a process called seizure-related consolidation (SRC), due to similarities with learning-related consolidation...
November 18, 2016: Epilepsia
https://www.readbyqxmd.com/read/27837376/associations-of-sedentary-time-and-moderate-vigorous-physical-activity-with-sleep-disordered-breathing-and-polysomnographic-sleep-in-community-dwelling-adults
#13
Christopher E Kline, Robert T Krafty, Suresh Mulukutla, Martica H Hall
PURPOSE: The purpose of this study was to evaluate the relationship between daytime activity (sedentary time, moderate- to vigorous-intensity physical activity [MVPA]) and indices of polysomnographically (PSG) assessed sleep, including sleep-disordered breathing (SDB). METHODS: One hundred and thirty-six adults (65% female, 59.8 ± 9.1 years, body mass index [BMI] 30.3 ± 6.9 kg m(-2)) provided daily estimates of time spent in light-, moderate-, and vigorous-intensity activity for 6-14 days (mean 9...
November 11, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27837003/medulla-oblongata-damage-and-cardiac-autonomic-dysfunction-in-parkinson-disease
#14
Nadya Pyatigorskaya, Marie Mongin, Romain Valabregue, Lydia Yahia-Cherif, Claire Ewenczyk, Cyril Poupon, Eden Debellemaniere, Marie Vidailhet, Isabelle Arnulf, Stephane Lehéricy
OBJECTIVE: To characterize medulla oblongata damage using diffusion tensor imaging (DTI) in Parkinson disease (PD) and correlate it with dysfunction of the cardiac sympathetic/vagal balance. METHODS: Fifty-two patients with PD and 24 healthy controls were included in the study. All participants underwent clinical examination and 3T MRI using 3D T1-weighted imaging and DTI. DTI metrics were calculated within manually drawn regions of interest. Heart rate variability was evaluated using spectral analysis of the R-R cardiac interval during REM and slow-wave sleep based on continuous overnight electrocardiographic monitoring...
November 11, 2016: Neurology
https://www.readbyqxmd.com/read/27832604/intra-and-inter-regional-cortical-interactions-related-to-sharp-wave-ripples-and-dentate-spikes
#15
Drew B Headley, Vasiliki Kanta, Denis Pare
The hippocampus generates population events termed sharp-wave ripples (SWRs) and dentate spikes (DSs). While little is known about DSs, SWR-related hippocampal discharges during sleep are thought to replay prior waking activity, reactivating the cortical networks that encoded the initial experience. During slow-wave sleep, such reactivations likely occur during up-states, when most cortical neurons are depolarized. However, most studies have examined the relationship between SWRs and up-states measured in single neocortical regions...
November 9, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27826247/modulations-of-heart-rate-ecg-and-cardio-respiratory-coupling-observed-in-polysomnography
#16
REVIEW
Thomas Penzel, Jan W Kantelhardt, Ronny P Bartsch, Maik Riedl, Jan F Kraemer, Niels Wessel, Carmen Garcia, Martin Glos, Ingo Fietze, Christoph Schöbel
The cardiac component of cardio-respiratory polysomnography is covered by ECG and heart rate recordings. However, their evaluation is often underrepresented in summarizing reports. As complements to EEG, EOG, and EMG, these signals provide diagnostic information for autonomic nervous activity during sleep. This review presents major methodological developments in sleep research regarding heart rate, ECG, and cardio-respiratory couplings in a chronological (historical) sequence. It presents physiological and pathophysiological insights related to sleep medicine obtained by new technical developments...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27825788/sleep-at-baseline-and-after-electroconvulsive-therapy-in-patients-with-major-depression
#17
Robert Göder, Irina Hinrichsen, Mareen Seeck-Hirschner, Richard Pfeiffer, Sara Lena Weinhold, Paul Christian Baier, Robert Hanss, Christina Schulz-DuBois
Sleep in major depressive disorder is frequently altered and possibly indicative for treatment outcomes. For example, increased rapid eye movement (REM-) sleep density seems to predict worse treatment outcomes of psychotherapy. We therefore investigated pre-treatment sleep and sleep changes after termination of electroconvulsive therapy (ECT). Sleep was polysomnographically recorded. The analysed sample consisted of 15 inpatients with ages ranging from 30 to 80 (mean 59 years). ECT was applied two times a week up to 7 weeks...
November 1, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27825452/neuroscience-what-are-cortical-neurons-doing-during-sleep
#18
Barbara E Jones
Through application of the latest calcium imaging techniques, a new study shows that pyramidal neurons generally decrease their activity during slow wave sleep and, remarkably, REM sleep, whereas parvalbumin interneurons increase their activity and could thus inhibit particular pyramidal cells during REM sleep.
November 7, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27823716/association-between-slow-wave-activity-cognition-and-behaviour-in-children-with-sleep-disordered-breathing
#19
Aidan J Weichard, Lisa M Walter, Samantha L Hollis, Gillian M Nixon, Margot J Davey, Rosemary S C Horne, Sarah N Biggs
BACKGROUND: It has been suggested that impaired dissipation of slow-wave activity (SWA) in children with sleep-disordered breathing (SDB) may be a potential mechanism for daytime dysfunction. We aimed to examine whether resolution of SDB resulted in normalisation of SWA dissipation and whether this was associated with improved cognition and behaviour. METHODS: Children (aged 3-6 y) diagnosed with SDB and age-matched non-snoring control children were followed up for 3 y after a baseline study...
September 2016: Sleep Medicine
https://www.readbyqxmd.com/read/27812555/sleep-physiology-in-toddlers-effects-of-missing-a-nap-on-subsequent-night-sleep
#20
Jonathan M Lassonde, Thomas Rusterholz, Salome Kurth, Allyson M Schumacher, Peter Achermann, Monique K LeBourgeois
The shift from a biphasic to a monophasic sleep schedule is a fundamental milestone in early childhood. This transition, however, may result in periods of acute sleep loss as children may nap on some but not all days. Although data indicating the behavioral consequences of nap deprivation in young children are accumulating, little is known about changes to sleep neurophysiology following daytime sleep loss. This study addresses this gap in knowledge by examining the effects of acute nap deprivation on subsequent nighttime sleep electroencephalographic (EEG) parameters in toddlers...
October 2016: Neurobiology of Sleep and Circadian Rhythms
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"