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Journal of Sleep Research

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https://www.readbyqxmd.com/read/28513083/screen-printed-ambulatory-electrode-set-enables-accurate-diagnostics-of-sleep-bruxism
#1
Tomi Miettinen, Katja Myllymaa, Anu Muraja-Murro, Susanna Westeren-Punnonen, Taina Hukkanen, Juha Töyräs, Reijo Lappalainen, Esa Mervaala, Kirsi Sipilä, Sami Myllymaa
Currently, definite diagnosis of sleep bruxism requires polysomnography. However, it is restrictedly available, and too cumbersome and expensive for the purpose. The aim of this study was to introduce an ambulatory electrode set and evaluate its feasibility for more cost-effective diagnostics of sleep bruxism. Six self-assessed bruxers (one male, five females; aged 21-58 years) and six healthy controls (four males, two females, aged 21-25 years) underwent a standard polysomnographic study and a concurrent study with the ambulatory electrode set...
May 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28513068/a-randomized-controlled-trial-branched-chain-amino-acid-levels-and-glucose-metabolism-in-patients-with-obesity-and-sleep-apnea
#2
Antonia Barceló, Daniel Morell-Garcia, Neus Salord, Cristina Esquinas, Gerardo Pérez, Antonio Pérez, Carmen Monasterio, Merce Gasa, Ana Maria Fortuna, Josep Maria Montserrat, Mercedes Mayos
There is evidence that changes in branched-chain amino acid (BCAA) levels may correlate with the efficacy of therapeutic interventions for affecting improvement in metabolic control. The objective of this study was to evaluate whether serum concentrations of BCAAs (leucine, isoleucine, valine) could mediate in insulin sensitivity and glucose tolerance after continuous positive airway pressure (CPAP) treatment in patients with obstructive sleep apnea (OSA). A prospective randomized controlled trial of OSA patients with morbid obesity was conducted...
May 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28513057/systemic-inflammation-and-alterations-to-cerebral-blood-flow-in-obstructive-sleep-apnea
#3
Hsiu-Ling Chen, Hsin-Ching Lin, Cheng-Hsien Lu, Pei-Chin Chen, Chih-Cheng Huang, Kun-Hsien Chou, Mao-Chang Su, Michael Friedman, Yi-Wen Chen, Wei-Che Lin
Systemic inflammation and alterations to regional cerebral blood flow (CBF) have been reported previously in obstructive sleep apnea (OSA). This study utilized arterial spin labelling (ASL) perfusion magnetic resonance imaging (MRI) to evaluate CBF in OSA patients and determine its relationship with systemic inflammation. Twenty male patients with moderate and severe OSA [apnea-hypopnea index (AHI) >15] and 16 healthy male volunteers (AHI <5) were recruited. Early- or late-phase changes in leucocyte apoptosis and its subsets were determined by flow cytometry...
May 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28513054/is-there-a-common-motor-dysregulation-in-sleepwalking-and-rem-sleep-behaviour-disorder
#4
Mehdi Haridi, Sebastian Weyn Banningh, Marion Clé, Smaranda Leu-Semenescu, Marie Vidailhet, Isabelle Arnulf
This study sought to determine if there is any overlap between the two major non-rapid eye movement and rapid eye movement parasomnias, i.e. sleepwalking/sleep terrors and rapid eye movement sleep behaviour disorder. We assessed adult patients with sleepwalking/sleep terrors using rapid eye movement sleep behaviour disorder screening questionnaires and determined if they had enhanced muscle tone during rapid eye movement sleep. Conversely, we assessed rapid eye movement sleep behaviour disorder patients using the Paris Arousal Disorders Severity Scale and determined if they had more N3 awakenings...
May 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28493346/no-effect-of-targeted-memory-reactivation-during-slow-wave-sleep-on-emotional-recognition-memory
#5
Jennifer E Ashton, Scott A Cairney, M Gareth Gaskell
Recent work has suggested that the benefits of sleep for memory consolidation are enhanced for highly salient (versus non-salient) memories. Using a technique known as targeted memory reactivation, it is possible to selectively strengthen newly learned memories by re-exposing the sleeping brain to auditory cues. The aim of the current study was to examine whether emotionally salient memories are also more responsive to targeted memory reactivation in slow-wave sleep than neutral memories. In an initial training phase, participants memorised emotionally negative and neutral pictures, which were each paired with a semantically related sound...
May 11, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28488395/shorter-duration-of-non-rapid-eye-movement-sleep-slow-waves-in-epha4-knockout-mice
#6
Marlène Freyburger, Gaétan Poirier, Julie Carrier, Valérie Mongrain
Slow waves occurring during non-rapid eye movement sleep have been associated with neurobehavioural performance and memory. In addition, the duration of previous wakefulness and sleep impacts characteristics of these slow waves. However, molecular mechanisms regulating the dynamics of slow-wave characteristics remain poorly understood. The EphA4 receptor regulates glutamatergic transmission and synaptic plasticity, which have both been linked to sleep slow waves. To investigate if EphA4 regulates slow-wave characteristics during non-rapid eye movement sleep, we compared individual parameters of slow waves between EphA4 knockout mice and wild-type littermates under baseline conditions and after a 6-h sleep deprivation...
May 10, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28488317/impact-of-sleep-disordered-breathing-in-patients-with-acute-myocardial-infarction-a-retrospective-analysis
#7
Verena Gessner, Thomas Bitter, Dieter Horstkotte, Olaf Oldenburg, Henrik Fox
Sleep-disordered breathing (SDB) is associated with an increased risk of cardiovascular events. Previous studies showed that severe SDB has a negative impact on myocardial salvage and progression of left ventricular dysfunction after acute myocardial infarction (AMI). This study investigated the frequency of SDB and the effects of SDB on left ventricular function after AMI. This retrospective study enrolled all patients with AMI who had undergone cardiorespiratory polygraphy for SDB diagnosis. The apnea-hypopnea index was used as a standard metric of SDB severity...
May 10, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28488270/rest-activity-rhythm-and-sleep-characteristics-associated-with-depression-symptom-severity-in-strained-dementia-caregivers
#8
Stephen F Smagula, Robert T Krafty, Briana J Taylor, Lynn M Martire, Richard Schulz, Martica H Hall
Depression is associated with disturbances to sleep and the 24-h sleep-wake pattern (known as the rest-activity rhythm: RAR). However, there remains a need to identify the specific sleep/RAR correlates of depression symptom severity in population subgroups, such as strained dementia caregivers, who are at elevated risk for major depressive disorder. We assessed the cross-sectional associations of sleep/RARs with non-sleep depression symptom severity among 57 (mean age: 74 years, standard deviation: 7.4) strained dementia caregivers who were currently without clinical depression...
May 10, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28470854/cardiac-autonomic-activity-during-daytime-nap-in-young-adults
#9
Nicola Cellini, Jacopo Torre, Luciano Stegagno, Michela Sarlo
The current study investigated both sympathetic and vagal autonomic patterns during a daytime sleep in 25 healthy adults (23.2 ± 2.4 years). Pre-ejection period (PEP; related inversely to beta-adrenergic sympathetic activity), the interval between consecutive R-waves (RR) and frequency-domain heart rate variability (HRV) were computed during pre-nap wakefulness and undisturbed sleep stages. Results showed sleep-related changes in RR and HRV measures, whereas PEP decreased significantly from pre-nap to sleep, showing no differences across sleep stages...
May 4, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28470767/sleep-wake-rhythm-disturbances-and-perceived-sleep-in-adolescent-chronic-fatigue-syndrome
#10
Maria Pedersen, Mirjam Ekstedt, Milada C Småstuen, Vegard B Wyller, Dag Sulheim, Even Fagermoen, Anette Winger, Edvard Pedersen, Harald Hrubos-Strøm
Chronic fatigue syndrome (CFS) is characterized by long-lasting, disabling and unexplained fatigue that is often accompanied by unrefreshing sleep. The aim of this cross-sectional study was to investigate sleep-wake rhythm and perceived sleep in adolescent CFS patients compared to healthy individuals. We analysed baseline data on 120 adolescent CFS patients and 39 healthy individuals included in the NorCAPITAL project. Activity measures from a uniaxial accelerometer (activPAL) were used to estimate mid-sleep time (mid-point of a period with sleep) and time in bed...
May 4, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28470725/sleep-disorders-and-an-increased-risk-of-parkinson-s-disease-in-individuals-with-non-apnea-sleep-disorders-a-population-based-cohort-study
#11
Yi-Han Hsiao, Yung-Tai Chen, Ching-Ming Tseng, Li-An Wu, Diahn-Warng Perng, Yuh-Min Chen, Tzeng-Ji Chen, Shi-Chuan Chang, Kun-Ta Chou
Sleep disorders are common non-motor symptoms in patients with Parkinson's disease. Our study aims to explore the relationship between non-apnea sleep disorders and future Parkinson's disease. This is a cohort study using a nationwide database. The participants were recruited from the Taiwan National Health Insurance Research Database between 2000 and 2003. A total of 91 273 adult patients who had non-apnea sleep disorders without pre-existing Parkinson's disease were enrolled. An age-, gender-, income-, urbanization- and Charlson comorbidity index score-matched control cohort consisting of 91 273 participants was selected for comparison...
May 4, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28448689/trends-and-factors-associated-with-insomnia-and-sleep-apnea-in-all-united-states-military-service-members-from-2005-to-2014
#12
John A Caldwell, Joseph J Knapik, Harris R Lieberman
Sleep disorders are a critical issue for the military, as they impact operational readiness, personnel health, wellbeing and health-care costs. The incidence of insomnia and obstructive sleep apnea (OSA) are increasing in the United States civilian population, and rates in military personnel exceed those of civilians. Using a comprehensive database, rates of medical encounters for insomnia and OSA were investigated and their associations with various demographic factors examined in the total US military population [1,381,406 ± 25,123, mean ± standard deviation (SD) personnel per year] from 2005 to 2014...
April 27, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28444788/night-sleep-in-patients-with-vegetative-state
#13
Yuri G Pavlov, Steffen Gais, Friedemann Müller, Monika Schönauer, Barbara Schäpers, Jan Born, Boris Kotchoubey
Polysomnographic recording of night sleep was carried out in 15 patients with the diagnosis vegetative state (syn. unresponsive wakefulness syndrome). Sleep scoring was performed by three raters, and confirmed by means of a spectral power analysis of the electroencephalogram, electrooculogram and electromyogram. All patients but one exhibited at least some signs of sleep. In particular, sleep stage N1 was found in 13 patients, N2 in 14 patients, N3 in nine patients, and rapid eye movement sleep in 10 patients...
April 26, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28436130/sleep-complaints-associated-with-wish-to-die-after-a-suicide-crisis-an-exploratory-study
#14
Anca Mirsu-Paun, Isabelle Jaussent, Giovanni Komar, Philippe Courtet, Jorge Lopez-Castroman
The present study explores whether sleep concerns are associated with wish to die throughout a 1-month time interval following a suicide crisis. Sixty-eight patients admitted to the emergency department of a general or psychiatric hospital were enrolled. Sleep difficulties were assessed using the Insomnia Severity Index (ISI), the Epworth Sleepiness Scale, self-reported satisfaction with sleep and time in bed. Suicidal ideation was assessed through the presence of a wish to die at 1 month following a suicide crisis...
April 24, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28436072/real-time-individualization-of-the-unified-model-of-performance
#15
Jianbo Liu, Sridhar Ramakrishnan, Srinivas Laxminarayan, Thomas J Balkin, Jaques Reifman
Existing mathematical models for predicting neurobehavioural performance are not suited for mobile computing platforms because they cannot adapt model parameters automatically in real time to reflect individual differences in the effects of sleep loss. We used an extended Kalman filter to develop a computationally efficient algorithm that continually adapts the parameters of the recently developed Unified Model of Performance (UMP) to an individual. The algorithm accomplishes this in real time as new performance data for the individual become available...
April 24, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28425191/thank-god-it-s-friday-sleep-improved
#16
Helena Petersen, Göran Kecklund, Paolo D'Onofrio, John Axelsson, Torbjörn Åkerstedt
The weekend is usually seen as a window of recovery. Thus, sleep before a day off may be less impaired than that before a workday. However, very few polysomnographical studies have investigated this hypothesis. Therefore, the aim of the present study was to compare sleep before a workday with that before a weekend. Seventeen teachers participated. Sleep was recorded with polysomnography on one weekday night during the workweek, and on a workday (Friday) followed by a day off. Sleep diaries and actigraphs were also used...
April 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28425172/the-homeostatic-and-circadian-sleep-recovery-responses-after-total-sleep-deprivation-in-mice
#17
Garance Dispersyn, Fabien Sauvet, Danielle Gomez-Merino, Sylvain Ciret, Catherine Drogou, Damien Leger, Thierry Gallopin, Mounir Chennaoui
Many studies on sleep deprivation effects lack data regarding the recovery period. We investigated the 2-day homeostatic and circadian sleep recovery response to 24 h of total sleep deprivation (TSD) induced by brief rotation of an activity wheel. Eight mice were implanted with telemetry transmitters (DSI F40-EET) that recorded simultaneously their electroencephalography (EEG), locomotor activity and temperature during 24 h of baseline (BSL), TSD and 2 days of recovery (D1 and D2). In a second experiment, two groups of five non-implanted mice underwent TSD or ad libitum sleep, after which they were killed, adrenal glands were weighed and blood was collected for analysis of corticosterone concentration...
April 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28425149/bayes-theorem-and-the-rule-of-100-a-commentary-on-validity-of-administrative-data-for-identification-of-obstructive-sleep-apnea
#18
LETTER
Matt T Bianchi
No abstract text is available yet for this article.
April 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28401702/confirmatory-factor-analysis-of-the-sleep-disturbance-scale-for-children-sdsc-in-a-clinical-sample-of-children-and-adolescents
#19
Angela M Marriner, Carmela Pestell, Donna M Bayliss, Marie McCann, Romola S Bucks
The Sleep Disturbance Scale for Children was developed as a parent-report measure to screen for sleep disturbances within the preceding 6 months. Notably, the scale was developed using a sample of typically developing children and children with sleep disorders. The aim of this study was to factor analyse the Sleep Disturbance Scale for Children using a clinical sample of children with a range of neuropsychological conditions and co-morbidities, and determine whether the original six-factor structure was retained...
April 12, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28401614/suppression-of-interictal-spikes-during-phasic-rapid-eye-movement-sleep-a-quantitative-stereo-electroencephalography-study
#20
C Campana, F Zubler, S Gibbs, F de Carli, P Proserpio, A Rubino, M Cossu, L Tassi, K Schindler, L Nobili
Tonic and phasic rapid eye movement (REM) sleep seem to represent two different brain states exerting different effects on epileptic activity. In particular, interictal spikes are suppressed strongly during phasic REM sleep. The reason for this effect is not understood completely. A different level of synchronization in phasic and tonic REM sleep has been postulated, yet never measured directly. Here we assessed the interictal spike rate across non-REM (NREM) sleep, phasic and tonic REM sleep in nine patients affected by drug resistant focal epilepsy: five with type II focal cortical dysplasia and four with hippocampal sclerosis...
April 12, 2017: Journal of Sleep Research
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