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https://www.readbyqxmd.com/read/28228742/sleep-dependent-consolidation-of-rewarded-behavior-is-diminished-in-children-with-attention-deficit-hyperactivity-disorder-and-a-comorbid-disorder-of-social-behavior
#1
Christian D Wiesner, Ina Molzow, Alexander Prehn-Kristensen, Lioba Baving
Children suffering from attention-deficit hyperactivity disorder (ADHD) often also display impaired learning and memory. Previous research has documented aberrant reward processing in ADHD as well as impaired sleep-dependent consolidation of declarative memory. We investigated whether sleep also fosters the consolidation of behavior learned by probabilistic reward and whether ADHD patients with a comorbid disorder of social behavior show deficits in this memory domain, too. A group of 17 ADHD patients with comorbid disorders of social behavior aged 8-12 years and healthy controls matched for age, IQ, and handedness took part in the experiment...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28227926/a-fast-approximation-method-for-principal-component-analysis-applied-to-ecg-derived-respiration-for-osa-detection
#2
Nadi Sadr, Philip de Chazal, Nadi Sadr, Philip de Chazal, Nadi Sadr, Philip de Chazal
In this paper, we present an approximation method for principal component analysis (PCA) and apply it to estimating the respiration from the overnight ECG signal. The approximation method is computationally fast with low memory requirements. We compare it to a full PCA method which is applied to segments of the ECG. Features were calculated from the two ECG derived respiration signals (EDR) and classifiers trained to detect obstructive sleep apnoea (OSA). The Extreme Learning Machine and Linear Discriminant classifier were used to classify the recordings...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227862/effects-of-high-frequency-rtms-on-sleep-deprivation-a-pilot-study
#3
D P Martinez-Cancino, J Azpiroz-Leehan, L Jimenez-Angeles, A Garcia-Quintanar, R Santana-Miranda, D P Martinez-Cancino, J Azpiroz-Leehan, L Jimenez-Angeles, A Garcia-Quintanar, R Santana-Miranda, A Garcia-Quintanar, L Jimenez-Angeles, R Santana-Miranda, J Azpiroz-Leehan, D P Martinez-Cancino
Transcranial magnetic stimulation is a neurostimulation technique which has the potential to serve as a unique research tool for investigating a wide variety of fields in cognitive neuroscience. TMS has been approved by the FDA to serve as a treatment to depression and has also been used to evaluate its effects among several conditions such as Alzheimer, Parkinson disease, chronic pain and stroke. High frequency TMS has been previously used with the intention to measure and modulate the negative effects of sleep deprivation in cognitive performance, but there is no consensus about the ideal protocol yet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227755/differentiation-of-spindle-associated-hippocampal-hfos-based-on-a-correlation-analysis
#4
Daniel Lachner Piza, Jonas C Bruder, Julia Jacobs, Andreas Schulze-Bonhage, Thomas Stieglitz, Matthias Dumpelmann, Daniel Lachner Piza, Jonas C Bruder, Julia Jacobs, Andreas Schulze-Bonhage, Thomas Stieglitz, Matthias Dumpelmann, Thomas Stieglitz, Matthias Dumpelmann, Jonas C Bruder, Andreas Schulze-Bonhage, Daniel Lachner Piza, Julia Jacobs
High Frequency Oscillations (HFOs) have been described as biomarkers of epileptogenic tissue; however their pathological/physiological classification poses a challenge to their predictive power. For the population of ripples co-occurring with sleep spindles, those ripples improving the antiparallel correlation of ripple-peaks and sleep spindle-troughs were classified as coupled-ripples and the rest as uncoupled-ripples. For the same population of ripples two reference groups called in-SOZ and non-SOZ were formed according to the ripples' location inside or outside the seizure onset zone (SOZ)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222075/a-pilot-study-of-a-cognitive-behavioral-intervention-for-breast-cancer-survivors
#5
Heather Becker, Ashley M Henneghan, Deborah L Volker, Sabrina Q Mikan
PURPOSE/OBJECTIVES: To test combining a group intervention to build self-efficacy for using compensatory strategies and lifestyle adjustments with brain-training practice to improve cognition.
. DESIGN: A quasiexperimental design.
. SETTING: Texas Oncology, a community oncology practice in Austin.
. SAMPLE: 20 women aged 35-65 years, who had finished chemotherapy at least three months before the study, were within five years of completing all treatment, and had self-reported cognitive concerns...
March 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28219752/sleep-does-not-facilitate-insight-in-older-adults
#6
Ursula Debarnot, Marta Rossi, Sophie Schwartz, Ugo Faraguna, Laura Sebastiani
Sleep has been shown to foster the process of insight generation in young adults during problem solving activities. Aging is characterized by substantial changes in sleep architecture altering memory consolidation. Whether sleep might promote the occurrence of insight in older adults as well has not yet been tested experimentally. To address this issue, we tested healthy young and old volunteers on an insight problem solving task, involving both explicit and implicit features, before and after a night of sleep or a comparable wakefulness period...
February 17, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28211489/sleep-supports-the-slow-abstraction-of-gist-from-visual-perceptual-memories
#7
Nicolas D Lutz, Susanne Diekelmann, Patricia Hinse-Stern, Jan Born, Karsten Rauss
Sleep benefits the consolidation of individual episodic memories. In the long run, however, it may be more efficient to retain the abstract gist of single, related memories, which can be generalized to similar instances in the future. While episodic memory is enhanced after one night of sleep, effective gist abstraction is thought to require multiple nights. We tested this hypothesis using a visual Deese-Roediger-McDermott paradigm, examining gist abstraction and episodic-like memory consolidation after 20 min, after 10 hours, as well as after one year of retention...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202719/sleep-enhances-knowledge-of-routes-and-regions-in-spatial-environments
#8
Hannes Noack, Wiebke Schick, Hanspeter Mallot, Jan Born
Sleep is thought to preferentially consolidate hippocampus-dependent memory, and as such, spatial navigation. Here, we investigated the effects of sleep on route knowledge and explicit and implicit semantic regions in a virtual environment. Sleep, compared with wakefulness, improved route knowledge and also enhanced awareness of the semantic regionalization within the environment, whereas signs of implicit regionalization remained unchanged. Results support the view that sleep specifically enhances explicit aspects of memory, also in the spatial domain...
March 2017: Learning & Memory
https://www.readbyqxmd.com/read/28202373/is-fatigue-associated-with-cognitive-dysfunction-in-early-parkinson-s-disease
#9
Benzi M Kluger, Kenn Freddy Pedersen, Ole-Bjorn Tysnes, Solgunn O Ongre, Bjørg Øygarden, Karen Herlofson
INTRODUCTION: Fatigue is a common and disabling symptom which may be seen in early Parkinson's disease (PD). Our understanding of the phenomenology and etiology of fatigue in PD is limited. The objective of this study was to determine whether fatigue was related to cognition in early PD patients. METHODS: The study is part of the Norwegian ParkWest project, a population-based cohort study, comprising 184 de novo, drug-naïve patients with PD. PD was diagnosed according to the Gelb criteria...
February 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28197893/gender-differences-in-clinical-and-polysomnographic-features-of-obstructive-sleep-apnea-a-clinical-study-of-2827-patients
#10
Ozen K Basoglu, Mehmet Sezai Tasbakan
PURPOSE: Obstructive sleep apnea (OSA) is underdiagnosed in females due to different clinical presentation. We aimed to determine the effect of gender on clinical and polysomnographic features and identify predictors of OSA in women. METHODS: Differences in demographic, clinical, and polysomnographic parameters between 2052 male and 775 female OSA patients were compared. RESULTS: In female OSA patients, age (56.1 ± 9.7 vs. 50.4 ± 11...
February 14, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28196783/symptom-cluster-trajectories-during-chemotherapy-in-breast-cancer-outpatients
#11
Hsin-Tien Hsu, Kuan-Chia Lin, Li-Min Wu, Chiung-Hui Juan, Ming-Feng Hou, Shiow-Li Hwang, Yi Liu, Marylin J Dodd
CONTEXT: Breast cancer patients often experience multiple symptoms and substantial discomfort. Some symptoms may occur simultaneously and throughout the duration of chemotherapy treatment OBJECTIVES: The aim of this study was to investigate symptom severity and symptom cluster trajectories during chemotherapy in outpatients with breast cancer in Taiwan. METHODS: This prospective, longitudinal, repeated measures study administered a standardized questionnaire (M...
February 11, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28193862/differential-modulation-of-global-and-local-neural-oscillations-in-rem-sleep-by-homeostatic-sleep-regulation
#12
Bowon Kim, Bernat Kocsis, Eunjin Hwang, Youngsoo Kim, Robert E Strecker, Robert W McCarley, Jee Hyun Choi
Homeostatic rebound in rapid eye movement (REM) sleep normally occurs after acute sleep deprivation, but REM sleep rebound settles on a persistently elevated level despite continued accumulation of REM sleep debt during chronic sleep restriction (CSR). Using high-density EEG in mice, we studied how this pattern of global regulation is implemented in cortical regions with different functions and network architectures. We found that across all areas, slow oscillations repeated the behavioral pattern of persistent enhancement during CSR, whereas high-frequency oscillations showed progressive increases...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28188962/impact-of-poor-sleep-quality-and-physical-inactivity-on-cognitive-function-in-community-dwelling-older-adults
#13
Sho Nakakubo, Hyuma Makizako, Takehiko Doi, Kota Tsutsumimoto, Sangyoon Lee, Sungchul Lee, Ryo Hotta, Seongryu Bae, Takao Suzuki, Hiroyuki Shimada
AIM: The purpose of the present study was to examine whether the combination of subjective sleep quality and physical activity is associated with cognitive performance among community-dwelling older adults. METHODS: Cross-sectional data on 5381 older adults who participated in part of the National Center for Geriatrics and Gerontology - Study of Geriatric Syndromes were analyzed. We assessed general cognitive impairment using the Mini-Mental State Examination, and also assessed story memory, attention, executive function and processing speed using the National Center for Geriatrics and Gerontology Functional Assessment Tool...
February 11, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28188451/patients-with-cheyne-stokes-respiration-and-heart-failure-patient-tolerance-after-three-month-discontinuation-of-treatment-with-adaptive-servo-ventilation
#14
Arild Hetland, Tøri Vigeland Lerum, Kristina H Haugaa, Thor Edvardsen
The recent SERVE HF study concluded that patients with chronic heart failure (CHF) and Cheyne-Stokes respiration (CSR) have increased mortality when treated with adaptive servo-ventilation (ASV). We, therefore, wanted to explore if these patients tolerated discontinuation of ASV treatment. The study was a prospective post-ASV treatment observational design with a 3-month follow-up period. 14 patients from our outpatient clinic, all male, were originally diagnosed with CHF and Cheyne-Stokes respiration, which is a clinical form of central sleep apnea...
February 11, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28188439/the-missing-link-between-sleep-disorders-and-age-related-dementia-recent-evidence-and-plausible-mechanisms
#15
REVIEW
Feng Zhang, Rujia Zhong, Song Li, Raymond Chuen-Chung Chang, Weidong Le
Sleep disorders are among the most common clinical problems and possess a significant concern for the geriatric population. More importantly, while around 40% of elderly adults have sleep-related complaints, sleep disorders are more frequently associated with co-morbidities including age-related neurodegenerative diseases and mild cognitive impairment. Recently, increasing evidence has indicated that disturbed sleep may not only serve as the consequence of brain atrophy, but also contribute to the pathogenesis of dementia and, therefore, significantly increase dementia risk...
February 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28179645/sleep-and-memory-rem-sleep-targets-new-synapses
#16
Katherine Whalley
No abstract text is available yet for this article.
February 9, 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/28173964/sleep-deprivation-disrupts-the-contribution-of-the-hippocampus-to-the-formation-of-novel-lexical-associations
#17
Virginie Sterpenich, Leonardo Ceravolo, Sophie Schwartz
Sleep is involved in the mechanisms underlying memory consolidation and brain plasticity. Consolidation refers to a process through which labile memories are reorganized into more stable ones. An intriguing but often neglected question concerns how pre-existing knowledge is modified when new information enters memory, and whether sleep can influence this process. We investigated how nonword learning may modify the neural representations of closely-related existing words. We also tested whether sleep contributes to any such effect by comparing a group of participants who slept during the night following a first encoding session to a sleep deprived group...
February 4, 2017: Brain and Language
https://www.readbyqxmd.com/read/28167293/ethanol-extract-of-the-seed-of-zizyphus-jujuba-var-spinosa-potentiates-hippocampal-synaptic-transmission-through-mitogen-activated-protein-kinase-adenylyl-cyclase-and-protein-kinase-a-pathways
#18
So Yeon Jo, In Ho Jung, Jee Hyun Yi, Tae Joon Choi, Seungheon Lee, Ji Wook Jung, Jeanho Yun, Young Choon Lee, Jong Hoon Ryu, Dong Hyun Kim
ETHNOPHARMACOLOGICAL RELEVANCE: As the seed of Zizyphus jujuba var. spinosa (Bunge) Hu ex H.F. Chow (Rhamnaceae) has been used to sleep disturbances in traditional Chinese and Korean medicine, many previous studies have focused on its sedative effect. AIM OF THE STUDY: Recently, we reported the neuroprotective effect of the effect of Z. jujuba var. spinosa. However, its effects on synaptic function have not yet been studied. In this project, we examined the action of ethanol extract of the seed of Z...
February 3, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28165489/the-interrelated-effect-of-sleep-and-learning-in-dogs-canis-familiaris-an-eeg-and-behavioural-study
#19
Anna Kis, Sára Szakadát, Márta Gácsi, Enikő Kovács, Péter Simor, Csenge Török, Ferenc Gombos, Róbert Bódizs, József Topál
The active role of sleep in memory consolidation is still debated, and due to a large between-species variation, the investigation of a wide range of different animal species (besides humans and laboratory rodents) is necessary. The present study applied a fully non-invasive methodology to study sleep and memory in domestic dogs, a species proven to be a good model of human awake behaviours. Polysomnography recordings performed following a command learning task provide evidence that learning has an effect on dogs' sleep EEG spectrum...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28162112/hoarding-in-the-elderly-a-critical-review-of-the-recent-literature
#20
David M Roane, Alyssa Landers, Jackson Sherratt, Gillian S Wilson
BACKGROUND: Hoarding is now a stand-alone diagnosis in DSM-5. The objective of this review is to critically evaluate the most recent literature on hoarding disorder (HD) in ageing patients. METHODS: A literature search was conducted using PubMed and PsychINFO to identify papers from 2000 to 2015 that examined HD and hoarding symptoms in late-life participants. RESULTS: Thirteen studies met inclusion criteria. Selected studies had significant methodological limitations with regard to participant sampling, diagnostic criteria, and methods for identifying co-morbid conditions...
February 6, 2017: International Psychogeriatrics
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