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https://www.readbyqxmd.com/read/29782873/sleep-divergently-affects-cognitive-and-automatic-emotional-response-in-children
#1
Elaina Bolinger, Jan Born, Katharina Zinke
Sleep enhances memory for emotional experiences, but its influence on the emotional response associated with memories is elusive. Here, we compared the influence of nocturnal sleep on memory for negative and neutral pictures and the associated emotional response in 8-11-year-old children, i.e., an age group with heightened levels of emotional memory-related sleep features. During all sessions, emotional responses as measured by subjective ratings, the late positive potential of the EEG (LPP) and heart rate deceleration (HRD) were recorded...
May 18, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29780332/myoclonic-jerks-and-schizophreniform-syndrome-case-report-and-literature-review
#2
Dominique Endres, Dirk-M Altenmüller, Bernd Feige, Simon J Maier, Kathrin Nickel, Sabine Hellwig, Jördis Rausch, Christiane Ziegler, Katharina Domschke, John P Doerr, Karl Egger, Ludger Tebartz van Elst
Background: Schizophreniform syndromes can be divided into primary idiopathic forms as well as different secondary organic subgroups (e.g., paraepileptic, epileptic, immunological, or degenerative). Secondary epileptic explanatory approaches have often been discussed in the past, due to the high rates of electroencephalography (EEG) alterations in patients with schizophrenia. In particular, temporal lobe epilepsy is known to be associated with schizophreniform symptoms in well-described constellations. In the literature, juvenile myoclonic epilepsy has been linked to emotionally unstable personality traits, depression, anxiety, and executive dysfunction; however, the association with schizophrenia is largely unclear...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29774882/-sleep-wake-rhythm-after-extracorporeal-circulation-in-new-zealand-rabbits
#3
Kaiwei Wang, Jiaqiang Zhang
To evaluate the change of sleep-wake rhythm after extracorporeal circulation (ECC) in New Zealand rabbits, and to explore the role of clock genes in sleep-wake rhythm disorder by ECC.
 Methods: A total of 54 New Zealand rabbits were randomly divided into 3 groups: a normal group (Group N), a sham group (Group S) and a model group (Group ECC). Electrocorticogram (ECOG), electroophthalmogram (EOG) and electromyogram (EMG) were respectively recorded by multipurpose EEG recorder, and the sleep-wake rhythm was also recorded...
April 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29773830/circadian-and-homeostatic-modulation-of-multi-unit-activity-in-midbrain-dopaminergic-structures
#4
Karim Fifel, Johanna H Meijer, Tom Deboer
Although the link between sleep disturbances and dopamine (DA)-related neurological and neuropsychiatric disorders is well established, the impact of sleep alterations on neuronal activity of midbrain DA-ergic structures is currently unknown. Here, using wildtype C57Bl mice, we investigated the circadian- and sleep-related modulation of electrical neuronal activity in midbrain ventral-tegmental-area (VTA) and substantia nigra (SN). We found no significant circadian modulation of activity in SN while VTA displayed a low amplitude but significant circadian modulation with increased firing rates during the active phase...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29767787/sleep-disordered-breathing-in-c57bl-6j-mice-with-diet-induced-obesity
#5
Thomaz Fleury Curado, Huy Pho, Slava Berger, Candela Caballero-Eraso, Mi-Kyung Shin, Luiz Ubirajara Sennes, Luu Pham, Alan R Schwartz, Vsevolod Y Polotsky
Obesity leads to sleep disordered breathing (SDB), as manifested by recurrent upper airway obstructions during sleep termed obstructive sleep apnea and carbon dioxide retention due to obesity hypoventilation. The objective of this work was to characterize breathing during sleep in C57BL6/J mice with diet-induced obesity. Arterial blood gas was measured in nine obese and nine lean mice during wakefulness. Nine male mice with diet induced obesity and six lean male C57BL/6J mice were head mounted with EEG and EMG electrodes...
May 15, 2018: Sleep
https://www.readbyqxmd.com/read/29762768/emergence-of-mature-cortical-activity-in-wakefulness-and-sleep-in-healthy-pre-term-and-full-term-infants
#6
Kimberley Whitehead, Pureza Laudiano-Dray, Judith Meek, Lorenzo Fabrizi
Study Objectives: Cortical activity patterns develop rapidly over the equivalent of the last trimester of gestation, in parallel with the establishment of sleep architecture. However, the emergence of mature cortical activity in wakefulness compared to sleep states in healthy pre-term infants is poorly understood. Methods: To investigate whether cortical activity has a different developmental profile in each sleep-wake state, we recorded 11-channels EEG, EOG and respiratory movement for one hour from 115 infants 34-43 weeks corrected age, with 0...
May 14, 2018: Sleep
https://www.readbyqxmd.com/read/29758338/how-do-children-fall-asleep-a-high-density-eeg-study-of-slow-waves-in-the-transition-from-wake-to-sleep
#7
Mathilde Spiess, Giulio Bernardi, Salome Kurth, Maya Ringli, Flavia M Wehrle, Oskar G Jenni, Reto Huber, Francesca Siclari
INTRODUCTION: Slow waves, the hallmarks of non-rapid eye-movement (NREM) sleep, are thought to reflect maturational changes that occur in the cerebral cortex throughout childhood and adolescence. Recent work in adults has revealed evidence for two distinct synchronization processes involved in the generation of slow waves, which sequentially come into play in the transition to sleep. In order to understand how these two processes are affected by developmental changes, we compared slow waves between children and young adults in the falling asleep period...
May 11, 2018: NeuroImage
https://www.readbyqxmd.com/read/29737605/chronic-high-caloric-diet-modifies-sleep-homeostasis-in-mice
#8
Maria Panagiotou, Johanna H Meijer, Tom Deboer
Obesity prevalence and sleep habit changes are commonplace nowadays, due to modern lifestyle. A bidirectional relationship likely exists between sleep quality and metabolic disruptions, that could impact quality of life. In our study, we investigated the effects of a chronic high-caloric diet on sleep architecture and sleep regulation in mice. We studied the effect of three months high-caloric diet (HCD, 45% fat) on sleep and the sleep electroencephalogram (EEG) in C57BL/6J mice during 24-h baseline (BL) recordings, and after 6-h sleep deprivation (SD)...
May 8, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29735555/genetic-activation-inactivation-and-deletion-reveal-a-limited-and-nuanced-role-for-somatostatin-containing-basal-forebrain-neurons-in-behavioral-state-control
#9
Christelle Anaclet, Roberto De Luca, Anne Venner, Olga Malyshevskaya, Michael Lazarus, Elda Arrigoni, Patrick M Fuller
Recent studies have identified an especially important role for basal forebrain GABAergic (BFVGAT ) neurons in the regulation of behavioral waking and fast cortical rhythms associated with cognition. However, BFVGAT neurons comprise several neurochemically and anatomically distinct sub-populations, including parvalbumin- and somatostatin-containing BFVGAT neurons (BFParv and BFSOM ), and it was recently reported that optogenetic activation of BFSOM neurons increases the probability of a wakefulness to non-rapid-eye movement (NREM) sleep transition when stimulated during the animal's rest period...
May 7, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29734983/the-effects-of-experimental-sleep-fragmentation-and-sleep-deprivation-on-the-response-of-the-genioglossus-muscle-to-inspiratory-resistive-loads
#10
Jennifer M Cori, Christian L Nicholas, Joanne Avraam, V Vien Lee, Rachel Schembri, Melinda L Jackson, Amy S Jordan
STUDY OBJECTIVES: Poor upper airway dilator muscle function may contribute to obstructive sleep apnea (OSA). Sleep deprivation reduces dilator muscle responsiveness, but sleep fragmentation, which is most characteristic of OSA, has not been assessed. This study compared the effects of sleep deprivation and fragmentation on dilator muscle responsiveness during wakefulness. METHOD: Twenty-four healthy individuals (10 female) participated in two consecutive overnight polysomnography (PSG) sessions...
April 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29730541/stroke-causes-a-transient-imbalance-of-interhemispheric-information-flow-in-eeg-during-non-rem-sleep
#11
Frederic Zubler, Andrea Seiler, Thomas Horvath, Corinne Roth, Silvia Miano, Christian Rummel, Heidemarie Gast, Lino Nobili, Kaspar A Schindler, Claudio L Bassetti
OBJECTIVE: Large-scale connectivity, especially interhemispheric connections, plays a crucial role for recovery after stroke. Here we used methods from information theory to characterize interhemispheric information flow in wake- and sleep-EEG after cerebral ischemia. METHODS: 34 patients with unilateral ischemic stroke were included. Symbolic Transfer Entropy (STE) was applied between bipolar EEG signals on the left and the right cerebral hemisphere during polysomnographic recordings in the acute phase and 3 months after stroke...
April 17, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29722893/response-to-chronic-sleep-restriction-extension-and-total-sleep-deprivation-in-humans-adaptation-or-preserved-sleep-homeostasis
#12
Jelena Skorucak, Emma Arbon, Derk-Jan Dijk, Peter Achermann
Sleep is regulated by a homeostatic process which in the two-process model of human sleep regulation is represented by EEG slow-wave activity (SWA). Many studies of acute manipulation of wake duration have confirmed the precise homeostatic regulation of SWA in rodents and humans. However, some chronic sleep restriction studies in rodents show that the sleep homeostatic response, as indexed by SWA, is absent or diminishes suggesting adaptation occurs. Here, we investigate the response to 7 days of sleep restriction (6 h time in bed) and extension (10 h time in bed) as well as the response to subsequent total sleep deprivation in 35 healthy participants in a cross-over design...
May 2, 2018: Sleep
https://www.readbyqxmd.com/read/29719919/a-robust-method-with-high-time-resolution-for-estimating-the-cortico-thalamo-cortical-loop-strength-and-the-delay-when-using-a-scalp-electroencephalography-applied-to-the-wake-sleep-transition
#13
Ikuhiro Yamaguchi, Akifumi Kishi, Fumiharu Togo, Toru Nakamura, Yoshiharu Yamamoto
OBJECTIVES: This study aimed to describe a robust method with high time resolution for estimating the cortico-thalamo-cortical (CTC) loop strength and the delay when using a scalp electroencephalography (EEG) and to illustrate its applicability for analyzing the wake-sleep transition. METHODS: The basic framework for the proposed method is the parallel use of a physiological model and a parametric phenomenological model: a neural field theory (NFT) of the corticothalamic system and an autoregressive (AR) model...
May 2018: Methods of Information in Medicine
https://www.readbyqxmd.com/read/29719672/abnormal-coherence-and-sleep-composition-in-children-with-angelman-syndrome-a-retrospective-eeg-study
#14
Hanna den Bakker, Michael S Sidorov, Zheng Fan, David J Lee, Lynne M Bird, Catherine J Chu, Benjamin D Philpot
Background: Angelman syndrome (AS) is a neurodevelopmental disorder characterized by intellectual disability, speech and motor impairments, epilepsy, abnormal sleep, and phenotypic overlap with autism. Individuals with AS display characteristic EEG patterns including high-amplitude rhythmic delta waves. Here, we sought to quantitatively explore EEG architecture in AS beyond known spectral power phenotypes. We were motivated by studies of functional connectivity and sleep spindles in autism to study these EEG readouts in children with AS...
2018: Molecular Autism
https://www.readbyqxmd.com/read/29703947/human-brain-arousal-in-the-resting-state-a-genome-wide-association-study
#15
Philippe Jawinski, Holger Kirsten, Christian Sander, Janek Spada, Christine Ulke, Jue Huang, Ralph Burkhardt, Markus Scholz, Tilman Hensch, Ulrich Hegerl
Arousal affects cognition, emotion, and behavior and has been implicated in the etiology of psychiatric disorders. Although environmental conditions substantially contribute to the level of arousal, stable interindividual characteristics are well-established and a genetic basis has been suggested. Here we investigated the molecular genetics of brain arousal in the resting state by conducting a genome-wide association study (GWAS). We selected N = 1877 participants from the population-based LIFE-Adult cohort...
April 27, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29700421/ultra-slow-mechanical-stimulation-of-olfactory-epithelium-modulates-consciousness-by-slowing-cerebral-rhythms-in-humans
#16
A Piarulli, A Zaccaro, M Laurino, D Menicucci, A De Vito, L Bruschini, S Berrettini, M Bergamasco, S Laureys, A Gemignani
The coupling between respiration and neural activity within olfactory areas and hippocampus has recently been unambiguously demonstrated, its neurophysiological basis sustained by the well-assessed mechanical sensitivity of the olfactory epithelium. We herein hypothesize that this coupling reverberates to the whole brain, possibly modulating the subject's behavior and state of consciousness. The olfactory epithelium of 12 healthy subjects was stimulated with periodical odorless air-delivery (frequency 0.05 Hz, 8 s on, 12 off)...
April 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29698731/tracking-wakefulness-as-it-fades-micro-measures-of-alertness
#17
Sridhar R Jagannathan, Alejandro Ezquerro-Nassar, Barbara Jachs, Olga V Pustovaya, Corinne A Bareham, Tristan A Bekinschtein
A major problem in psychology and physiology experiments is drowsiness: around a third of participants show decreased wakefulness despite being instructed to stay alert. In some non-visual experiments participants keep their eyes closed throughout the task, thus promoting the occurrence of such periods of varying alertness. These wakefulness changes contribute to systematic noise in data and measures of interest. To account for this omnipresent problem in data acquisition we defined criteria and code to allow researchers to detect and control for varying alertness in electroencephalography (EEG) experiments under eyes-closed settings...
April 23, 2018: NeuroImage
https://www.readbyqxmd.com/read/29697841/cortical-region-specific-sleep-homeostasis-in-mice-effects-of-time-of-day-and-waking-experience
#18
Mathilde C C Guillaumin, Laura E McKillop, Nanyi Cui, Simon P Fisher, Russell G Foster, Maarten de Vos, Stuart N Peirson, Peter Achermann, Vladyslav V Vyazovskiy
Sleep-wake history, wake behaviours, lighting conditions and circadian time influence sleep, but neither their relative contribution, nor the underlying mechanisms are fully understood. The dynamics of EEG slow-wave activity (SWA) during sleep can be described using the two-process model, whereby the parameters of homeostatic Process S are estimated using empirical EEG SWA (0.5-4 Hz) in non-rapid eye movement sleep (NREM), and the 24-h distribution of vigilance states. We hypothesised that the influence of extrinsic factors on sleep homeostasis, such as the time of day or wake behaviour, would manifest in systematic deviations between empirical SWA and model predictions...
April 25, 2018: Sleep
https://www.readbyqxmd.com/read/29695101/triphlorethol-a-a-dietary-polyphenol-from-seaweed-decreases-sleep-latency-and-increases-non-rapid-eye-movement-sleep-in-mice
#19
Minseok Yoon, Suengmok Cho
In our previous studies, we have demonstrated that marine polyphenol phlorotannins promote sleep through the benzodiazepine site of the gamma-aminobutyric acid type A (GABAA ) receptors. In this follow-up study, the sleep-promoting effects of triphlorethol A, one of the major phlorotannin constituents, were investigated. The effect of triphlorethol A on sleep-wake architecture and profiles was evaluated based on electroencephalogram and electromyogram data from C57BL/6N mice and compared with the well-known hypnotic drug zolpidem...
April 24, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29684473/improved-cognitive-morning-performance-in-healthy-older-adults-following-blue-enriched-light-exposure-on-the-previous-evening
#20
Karine Scheuermaier, Mirjam Münch, Joseph M Ronda, Jeanne F Duffy
OBJECTIVES: Exposure to light can have acute alerting and circadian phase-shifting effects. This study investigated the effects of evening exposure to blue-enriched polychromatic white (BEL) vs. polychromatic white light (WL) on sleep inertia dissipation the following morning in older adults. METHODS: Ten healthy older adults (average age = 63.3 yrs; 6 F) participated in a 13-day study comprising three baseline days, an initial circadian phase assessment, four days with 2-h evening light exposures, a post light exposure circadian phase assessment and three recovery days...
April 20, 2018: Behavioural Brain Research
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