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Sleep disorders and cognitive

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https://www.readbyqxmd.com/read/28645156/rem-sleep-behavior-disorder-and-cognitive-impairment-in-parkinson-s-disease
#1
Natalia Jozwiak, Ronald B Postuma, Jacques Montplaisir, Véronique Latreille, Michel Panisset, Sylvain Chouinard, Pierre-Alexandre Bourgouin, Jean-François Gagnon
Study Objectives: REM sleep behavior disorder (RBD) is a parasomnia affecting 33 to 46% of patients with Parkinson's disease (PD). The existence of a unique and specific impaired cognitive profile in PD patients with RBD is still controversial. We extensively assessed cognitive functions to identify whether RBD is associated with more severe cognitive deficits in nondemented patients with PD. Methods: One hundred and sixty-two participants, including 53 PD patients with RBD, 40 PD patients without RBD, and 69 healthy subjects, underwent polysomnography, a neurological assessment, and an extensive neuropsychological exam to assess attention, executive functions, episodic learning and memory, visuospatial abilities, and language...
June 22, 2017: Sleep
https://www.readbyqxmd.com/read/28641933/the-role-of-sleep-in-regulating-structural-plasticity-and-synaptic-strength-implications-for-memory-and-cognitive-function
#2
REVIEW
Frank Raven, Eddy A Van der Zee, Peter Meerlo, Robbert Havekes
Dendritic spines are the major sites of synaptic transmission in the central nervous system. Alterations in the strength of synaptic connections directly affect the neuronal communication, which is crucial for brain function as well as the processing and storage of information. Sleep and sleep loss bidirectionally alter structural plasticity, by affecting spine numbers and morphology, which ultimately can affect the functional output of the brain in terms of alertness, cognition, and mood. Experimental data from studies in rodents suggest that sleep deprivation may impact structural plasticity in different ways...
May 18, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28639878/exploring-the-phenotype-in-mild-cognitive-impairment-to-aid-the-prediction-of-those-at-risk-of-transitioning-to-parkinson-disease-and-dementia-with-lewy-bodies
#3
Jennifer Y Y Szeto, Glenda M Halliday, Sharon L Naismith, Simon J G Lewis
To date, only limited research has concurrently investigated the presence of rapid eye movement sleep behavior disorder (RBD) and other features associated with Parkinson disease (PD) and dementia with Lewy bodies (DLB) in people presenting with mild cognitive impairment (MCI). As a first step towards a longitudinal research project, the present study explored the relationships between MCI, RBD, and depression in 108 older adults who presented with subjective memory complaints but were not known to have a neurodegenerative condition...
July 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28637840/promoting-sleep-oscillations-and-their-functional-coupling-by-transcranial-stimulation-enhances-memory-consolidation-in-mild-cognitive-impairment
#4
Julia Ladenbauer, Josef Ladenbauer, Nadine Külzow, Rebecca de Boor, Elena Avramova, Ulrike Grittner, Agnes Flöel
Alzheimer's disease (AD) not only involves loss of memory functions but also prominent deterioration of sleep physiology, already evident in the stage of mild cognitive impairment (MCI). Cortical slow oscillations (SO, 0.5-1 Hz) and thalamo-cortical spindle activity (12-15 Hz) during sleep, and their temporal coordination, are considered critical for memory formation. We investigated the potential of slow oscillatory transcranial direct current stimulation (so-tDCS), applied during a daytime nap in a sleep state-dependent manner, to modulate these activity patterns and sleep-related memory consolidation in 9 male and 7 female human patients with MCI...
June 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28637633/physical-activity-correlates-among-people-with-psychosis-data-from-47-low-and-middle-income-countries
#5
Brendon Stubbs, Davy Vancampfort, Joseph Firth, Mats Hallgren, Felipe Schuch, Nicola Veronese, Marco Solmi, Fiona Gaughran, Kai G Kahl, Simon Rosenbaum, Philip B Ward, Andre F Carvalho, Ai Koyanagi
BACKGROUND: People with schizophrenia engage in low levels of physical activity (PA). However, few large-scale studies have investigated the factors that may influence PA participation in individuals with psychosis and data from low- and middle-income countries (LMICs) is especially scarce. Thus, we investigated PA correlates in a large sample of people with a psychosis diagnosis across 47 LMICs. METHODS: Cross-sectional data from the World Health Survey, restricting to those with a self-reported lifetime diagnosis of schizophrenia/psychotic disorder, was analyzed...
June 18, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28634363/long-term-health-outcomes-in-patients-with-prader-willi-syndrome-a-nationwide-cohort-study-in-denmark
#6
E Hedgeman, S P Ulrichsen, S Carter, N C Kreher, K P Malobisky, M M Braun, J Fryzek, M S Olsen
BACKGROUND: Prader-Willi syndrome (PWS) is a rare congenital disease that affects growth, sexual development, cognitive function and behavior. Individuals exhibit food preoccupation and hyperphagia, which may lead to obesity with premature morbidity and mortality. The aim of this work was to evaluate the risk of venous thromboembolisms (VTE), myocardial infarction, pulmonary hypertension, sleep apnea, depression, anxiety and all-cause mortality among persons with PWS as compared to an age- and sex-matched general population cohort...
June 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28633999/characteristics-of-a-mild-traumatic-brain-injury-sample-recruited-using-amazon-s-mechanical-turk
#7
John Bernstein, Matthew Calamia
BACKGROUND: Several barriers exist in the recruitment of individuals with a history of mild traumatic brain injury (mTBI). The current study is the first to examine whether crowdsourcing, which has been used in other clinical populations, is useful in the recruitment of those with mTBI. OBJECTIVE: To examine whether Amazon's Mechanical Turk (MTurk), an online crowdsourcing platform, is a useful tool in the recruitment of individuals with a history of mild traumatic brain injury (mTBI) and to examine the injury and psychological characteristics of individuals who report a history of mTBI...
June 17, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28628768/internet-delivered-cognitive-behavior-therapy-for-antenatal-depression-a-randomised-controlled-trial
#8
Erik Forsell, Marie Bendix, Fredrik Holländare, Barbara Szymanska von Schultz, Josefine Nasiell, Margareta Blomdahl-Wetterholm, Caroline Eriksson, Sara Kvarned, Johanna Lindau van der Linden, Elin Söderberg, Jussi Jokinen, Katarina Wide, Viktor Kaldo
Major depression occurs in 5-10% of pregnancies and is associated with many negative effects for mother and child, yet treatment options are scarce. To our knowledge, this is the first published randomised controlled trial on Internet delivered Cognitive Behavior Therapy (ICBT) for this group. OBJECTIVE: To test the efficacy of a pregnancy adapted version of an existing 10-week ICBT-program for depression as well as assessing acceptability and adherence DESIGN: Randomised controlled trial...
June 13, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28625940/prodromal-stage-of-disease-dementia-with-lewy-bodies-how-to-diagnose-in-practice
#9
Frédéric Blanc, Marc Verny
Disease with Lewy bodies or dementia with Lewy bodies (DLB), particularly at the prodromal stage, is a complex disease to diagnose because of different clinical beginnings and variable paths in terms of clinical expression. Thus DLB can be entcountered in different input modes: mild cognitive impairment, depression, acute behavioral disorders, confusion and delirium, or sleep disorders. In the aim to better diagnose the disease, should be sought obviously to search for the key symptoms: fluctuations, hallucinations, extra-pyramidal syndrome, and REM sleep behavior disorder...
June 1, 2017: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/28623947/effects-of-digital-cognitive-behavioural-therapy-for-insomnia-on-cognitive-function-study-protocol-for-a-randomised-controlled-trial
#10
Simon D Kyle, Madeleine E D Hurry, Richard Emsley, Annemarie I Luik, Ximena Omlin, Kai Spiegelhalder, Colin A Espie, Claire E Sexton
BACKGROUND: The daytime effects of insomnia pose a significant burden to patients and drive treatment seeking. In addition to subjective deficits, meta-analytic data show that patients experience reliable objective impairments across several cognitive domains. While Cognitive Behavioural Therapy for Insomnia (CBT-I) is an effective and scalable treatment, we know little about its impact upon cognitive function. Trials of CBT-I have typically used proxy measures for cognitive functioning, such as fatigue or work performance scales, and no study has assessed self-reported impairment in cognitive function as a primary outcome...
June 17, 2017: Trials
https://www.readbyqxmd.com/read/28620339/the-stress-acceleration-hypothesis-of-nightmares
#11
Tore Nielsen
Adverse childhood experiences can deleteriously affect future physical and mental health, increasing risk for many illnesses, including psychiatric problems, sleep disorders, and, according to the present hypothesis, idiopathic nightmares. Much like post-traumatic nightmares, which are triggered by trauma and lead to recurrent emotional dreaming about the trauma, idiopathic nightmares are hypothesized to originate in early adverse experiences that lead in later life to the expression of early memories and emotions in dream content...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28619687/use-of-the-central-sensitization-inventory-csi-as-a-treatment-outcome-measure-for-chronic-spinal-pain-disorder-patients-in-a-functional-restoration-program
#12
Randy Neblett, Meredith M Hartzell, Mark Williams, Kelley R Bevers, Tom G Mayer, Robert J Gatchel
BACKGROUND CONTEXT: The Central Sensitization Inventory (CSI) is a valid and reliable patient-reported instrument designed to identify patients whose presenting symptoms may be related to Central Sensitization (CS). Part A of the CSI measures a full array of 25 somatic and emotional symptoms associated with CS, and Part B asks if patients have previously been diagnosed with one or more specific Central Sensitivity Syndromes (CSSs) and related disorders. The CSI has previously been validated in a group of chronic pain patients who were screened by a trained psychiatrist for specific CSS diagnoses...
June 12, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28619656/the-large-scale-functional-connectivity-correlates-of-consciousness-and-arousal-during-the-healthy-and-pathological-human-sleep-cycle
#13
REVIEW
Enzo Tagliazucchi, Eus J W van Someren
Advances in neuroimaging have greatly improved our understanding of human sleep from a systems neuroscience perspective. However, cognition and awareness are reduced during sleep, hindering the applicability of standard task-based paradigms. Methods recently developed to study spontaneous brain activity fluctuations have proven useful to overcome this limitation. In this review, we focus on the concept of functional connectivity (FC, i.e. statistical covariance between brain activity signals) and its application to functional magnetic resonance imaging (fMRI) data acquired during sleep...
June 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28619181/multifactorial-sleep-disturbance-in-parkinson-s-disease
#14
REVIEW
J Andrew Albers, Pratap Chand, A Michael Anch
Parkinson's disease (PD) is the second most common neurodegenerative disorder, ranking only behind Alzheimer's disease and affecting 2% of the population over the age of 65. Pathophysiologically, PD is characterized by selective degeneration of the dopaminergic neurons of the substantia nigra pars compacta (SNpc) and striatal dopamine depletion. Patients may also exhibit mild-to-severe degeneration of other central and peripheral nervous tissues. The most dramatic symptoms of the disease are profound dopamine-responsive motor disturbances, including bradykinesia, akinesia, rigidity, resting tremor, and postural instability...
July 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28618185/let-s-talk-about-sleep-a-systematic-review-of-psychological-interventions-to-improve-sleep-in-college-students
#15
REVIEW
Anja Friedrich, Angelika A Schlarb
Sleep problems are a common occurrence in college students. Insomnia, nightmares and impaired sleep quality lead to several mental health issues, as well as impaired academic performance. Although different sleep programmes exist, a systematic overview comparing their effectiveness is still missing. This systematic review aims to provide an overview of psychological interventions to improve sleep in college students. Seven databases were searched from November to December 2016 (MEDLINE, EMBASE, PsycINFO, Cinahl, Cochrane Library, PubMed, OpenSigle)...
June 15, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28617544/the-relationship-between-quality-of-life-and-clinical-phenotype-in-patients-with-treatment-resistant-and-non-treatment-resistant-depression
#16
J Qiao, L-J Qian, H-F Zhao, G-H Gong, D-Q Geng
OBJECTIVE: The purpose of this investigation is to determine the differences in quality of life (QOL) and clinical phenotype between patients with treatment resistant (TRD) and non-treatment resistant depression (NTRD). PATIENTS AND METHODS: The severity, QOL, and cognitive function of 107 TRD and 173 NTRD patients were evaluated and calculated by the Hamilton Depression Scale-17 (HAMD-17), the 36-Item Short Form Health Survey (SF-36), and the P300 component of event-related potentials (ERP), respectively...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28615776/sleeping-beauty-syndrome-a-case-report-and-review-of-female-cases-reported-from-india
#17
Naresh Nebhinani, Navratan Suthar
Kleine-Levin syndrome (KLS), also called "Sleeping beauty syndrome" is a rare, disorder predominantly reported in adolescent males, characterized by recurrent episodes of hypersomnia and to various degrees, hyperphagia, cognitive disturbances, and hypersexuality. Here, we are reporting a case of a middle-aged female, with 16 years delay in diagnosing KLS, poor response to most of the psychotropics, except good response to a combination of lithium, sertraline, and modafinil for last 12 months and also reviewing other female cases with KLS reported from India...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28612424/sleep-disordered-breathing-and-cognitive-functioning-in-preschool-children-with-and-without-down-syndrome
#18
A Joyce, D Dimitriou
BACKGROUND: Sleep affects children's cognitive development, preparedness for school and future academic outcomes. People with Down syndrome (DS) are particularly at risk for sleep-disordered breathing (SDB). To our knowledge, the association between SDB and cognition in preschoolers with DS is unknown. METHODS: We assessed sleep by using cardiorespiratory polygraphy in 22 typically developing (TD) preschoolers and 22 with DS. Cognition was assessed by using the Mullen Scales of Early Learning and behaviour by using the Strengths and Difficulties Questionnaire (SDQ)...
June 14, 2017: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/28611655/obesity-and-co-morbid-conditions-are-associated-with-specific-neuropsychiatric-symptoms-in-mild-cognitive-impairment
#19
Ashley H Sanderlin, David Todem, Andrea C Bozoki
Background: Neuropsychiatric symptoms (NPSs) in MCI, and midlife obesity increase the likelihood of developing Alzheimer's disease. It is unknown whether obesity or related health conditions modify the risk of NPS or severity of cognitive impairment in MCI. Methods: One hundred and thirteen subjects with MCI were assessed near the time of MCI diagnosis. The sample was divided by BMI and related disorders, type-2 diabetes (T2D) and obstructive sleep apnea (OSA) to measure the relationship of these groups with NPS and severity of MCI...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28598846/neuropsychiatric-symptoms-and-cognitive-impairment-understanding-the-importance-of-co-morbid-symptoms
#20
Moyra E Mortby, Richard Burns, Ranmalee Eramudugolla, Zahinoor Ismail, Kaarin J Anstey
BACKGROUND: Neuropsychiatric symptoms (NPS) are common in older adults with cognitive impairment, yet little is known about population-based prevalence and clinical implications of co-morbid symptom presentation across the spectrum from normal cognition to dementia. OBJECTIVE: To characterize the prevalence of NPS and explore the clinical implications of co-morbid symptom presentation. METHODS: Cross-sectional study of 1,417 older adults (aged 73-79) with dementia (n = 40); with mild cognitive impairment (MCI; n = 133); who are 'cognitively normal, but-at-risk' (CN-AR; n = 397); and who are cognitively normal (n = 847)...
June 3, 2017: Journal of Alzheimer's Disease: JAD
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