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https://www.readbyqxmd.com/read/28924264/neurocognitive-and-behavioral-functioning-in-adolescents-with-sleep-disordered-breathing-a-population-based-dual-energy-x-ray-absorptiometry-study
#1
S S Frye, J Fernandez-Mendoza, S L Calhoun, J Gaines, M D Sawyer, F He, D Liao, A N Vgontzas, E O Bixler
BACKGROUND/OBJECTIVES: Sleep disordered breathing (SDB) has been associated with neurocognitive and behavioral problems in young children; however, this association is less studied in adolescents. Evidence suggests that obesity plays a key role in the development of SDB, although its relative association with neurobehavioral functioning remains unclear. We examined whether SDB and obesity are associated with neurocognitive and behavior problems in adolescents. SUBJECTS/METHODS: 421 adolescents (17...
September 19, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28923718/automated-measurement-of-hippocampal-subfields-in-ptsd-evidence-for-smaller-dentate-gyrus-volume
#2
Jasmeet P Hayes, Scott Hayes, Danielle R Miller, Ginette Lafleche, Mark W Logue, Mieke Verfaellie
Smaller hippocampal volume has been consistently observed as a biomarker of posttraumatic stress disorder (PTSD). However, less is known about individual volumes of the subfields composing the hippocampus such as the dentate gyrus and cornu ammonis (CA) fields 1-4 in PTSD. The aim of the present study was to examine the hypothesis that volume of the dentate gyrus, a region putatively involved in distinctive encoding of similar events, is smaller in individuals with PTSD versus trauma-exposed controls. Ninety-seven recent war veterans underwent structural imaging on a 3T scanner and were assessed for PTSD using the Clinician-Administered PTSD Scale...
September 9, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28923025/intrafamilial-phenotypic-heterogeneity-in-a-taiwanese-family-with-a-mapt-p-r5h-mutation-a-case-report-and-literature-review
#3
Hui-Chi Lin, Chin-Hsien Lin, Pei-Lung Chen, Shih-Jung Cheng, Pei-Hao Chen
BACKGROUND: Frontotemporal degeneration (FTD) is a clinically and genetically heterogeneous neurodegenerative disorder characterized by deficits in executive function that frequently overlaps with parkinsonism and motor neuron disorders. Several genes have been identified to cause autosomal dominant forms of FTD, including the gene coding for the protein associated with microtubule tau (MAPT). While most reported pathogenic mutations in MAPT occur in exons 9-13, few families have been reported with mutations outside of this region...
September 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28921058/the-influence-of-task-demands-verbal-ability-and-executive-functions-on-item-and-source-memory-in-autism-spectrum-disorder
#4
Sara Semino, Melanie Ring, Dermot M Bowler, Sebastian B Gaigg
Autism Spectrum Disorder (ASD) is generally associated with difficulties in contextual source memory but not single item memory. There are surprising inconsistencies in the literature, however, that the current study seeks to address by examining item and source memory in age and ability matched groups of 22 ASD and 21 comparison adults. Results show that group differences in source memory are moderated by task demands but not by individual differences in verbal ability, executive function or item memory. By contrast, unexpected group differences in item memory could largely be explained by individual differences in source memory...
September 18, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28921043/slow-wave-activity-and-executive-dysfunction-in-children-with-sleep-disordered-breathing
#5
Jessica A Christiansz, Chloe R Lappin, Aidan J Weichard, Gillian M Nixon, Margot J Davey, Rosemary S C Horne, Sarah N Biggs
PURPOSE: This study aimed to examine slow wave activity (SWA), a marker of homeostatic regulation, as a potential mechanism linking sleep disordered breathing (SDB) with executive dysfunction in children. METHODS: Executive function domains of working memory, spatial planning, information processing, and sustained attention were assessed using the Cambridge Neuropsychological Test Automated Battery (CANTAB) in children (N = 40; 5-12 years) referred for clinical diagnosis of SDB...
September 18, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28920182/neovascularization-and-synaptic-function-regulation-with-memantine-and-rosuvastatin-in-a-rat-model-of-chronic-cerebral-hypoperfusion
#6
Nan Zhang, Chenchen Song, Baomin Zhao, Mengya Xing, Lanlan Luo, Marc L Gordon, Yan Cheng
Cerebral hypoperfusion is an important factor in the pathogenesis of cerebrovascular diseases and neurodegenerative disorders. We investigated the effects of memantine and rosuvastatin on both neovascularization and synaptic function in a rat model of chronic cerebral hypoperfusion, which was established by the bilateral common carotid occlusion (2VO) method. We tested learning and memory ability, synaptic function, circulating endothelial progenitor cell (EPC) number, expression of neurotrophic factors, and markers of neovasculogenesis and cell proliferation after memantine and/or rosuvastatin treatment...
September 17, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28920096/competition-effects-in-visual-cortex-between-emotional-distractors-and-a-primary-task-in-remitted-depression
#7
Mary L Woody, Vladimir Miskovic, Max Owens, Kiera M James, Cope Feurer, Effua E Sosoo, Brandon E Gibb
BACKGROUND: Attentional biases, particularly difficulty inhibiting attention to negative stimuli, are implicated in risk for major depressive disorder (MDD). The current study examined a neural measure of attentional bias using a continuous index of visuocortical engagement (steady-state visual evoked potentials [SSVEPs]) before and after a negative mood induction in a population at high-risk for MDD recurrence due to a recently remitted MDD (rMDD) episode. Additionally, we examined working memory (WM) capacity as a potential moderator of the link between rMDD and visuocortical responses...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28919445/cognitive-effects-of-labeled-addictolytic-medications
#8
REVIEW
Camille Noélie Pujol, Cecilia Paasche, Vincent Laprevote, Benoit Trojak, Pierre Vidailhet, Elisabeth Bacon, Laurence Lalanne
INTRODUCTION: Alcohol, tobacco, and illegal drug usage is pervasive throughout the world, and abuse of these substances is a major contributor to the global disease burden. Many pharmacotherapies have been developed over the last 50years to target addictive disorders. While the efficacy of these pharmacotherapies is largely recognized, their cognitive impact is less known. However, all substance abuse disorders are known to promote cognitive disorders like executive dysfunction and memory impairment...
September 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28919330/limbic-encephalitis-with-lgi1-antibodies-in-a-14-year-old-boy
#9
M Schimmel, M C Frühwald, C G Bien
Limbic encephalitis (LE) with antibodies against leucine-rich glioma inactivated protein 1 (LGI1) is an auto-antibody mediated disorder with characteristic symptoms as dysfunction of memory, faciobrachial dystonic seizures and neuropsychiatric symptoms as emotional lability. Limbic encephalitis with LGI1 antibodies has been known so far as a disease of adults. We describe the case of a 14-year-old boy presenting with typical dysfunction of memory and LGI1 antibodies. To the best of our knowledge, this is the youngest patient with LGI1 antibody mediated limbic encephalitis described so far...
September 2, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28918504/autism-spectrum-disorders-and-disease-modeling-using-stem-cells
#10
REVIEW
Anita Brito, Fabiele Baldino Russo, Alysson Renato Muotri, Patricia Cristina Baleeiro Beltrão-Braga
Autism spectrum disorders (ASD) represent a variety of disorders characterized as complex lifelong neurodevelopment disabilities, which may affect the ability of communication and socialization, including typical comportments like repetitive and stereotyped behavior. Other comorbidities are usually present, such as echolalia, hypotonia, intellectual disability and difficulties in processing figured speech. Furthermore, some ASD individuals may present certain abilities, such as eidetic memory, outstanding musical or painting talents and special mathematical skills, among others...
September 16, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28918469/aversive-and-non-aversive-memory-impairment-in-the-mucopolysaccharidosis-ii-mouse-model
#11
Amanda Stapenhorst Azambuja, Lilian Correa, Bernardo Pappi Gabiatti, Giselle Renata Martins, Álvaro de Oliveira Franco, Maria Flávia Marques Ribeiro, Guilherme Baldo
Hunter syndrome (MPS II, OMIM 309900) is a lysosomal storage disorder due to deficient iduronate sulphatase activity. Patients present multiple cognitive alterations, and the aim of this work was to verify if MPS II mice also present some progressive cognitive alterations. For that, MPS II mice from 2 to 6 months of age were submitted to repeated open field and inhibitory avoidance tests to evaluate memory parameters. MPS II mice presented impaired memory at 6 months evaluated by open field test. They also performed poorly in the inhibitory avoidance test from 4 months...
September 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28918343/emotion-and-self-in-psychotic-disorders-behavioral-evidence-from-an-emotional-evaluation-task-using-verbal-stimuli-varying-in-emotional-valence-and-self-reference
#12
Cornelia Herbert, Klaus Hesse, Dirk Wildgruber
BACKGROUND AND OBJECTIVES: Psychotic disorders are accompanied by changes in emotional and self-referential processing. This behavioral study investigates the link between emotional and self-referential processing in 21 psychotic patients with and without symptoms of disordered self-processing and 21 healthy age-matched controls during emotional evaluation of words varying in emotional valence and self-reference. METHODS: Emotional and neutral words related to the self of the reader (e...
September 5, 2017: Journal of Behavior Therapy and Experimental Psychiatry
https://www.readbyqxmd.com/read/28918243/homeostatic-systems-biocybernetics-and-autonomic-neuroscience
#13
REVIEW
David S Goldstein, Irwin J Kopin
In this review we describe a series of major concepts introduced during the past 150years that have contributed to our current understanding about how physiological processes required for well-being and survival are regulated. One can theorize that hierarchical networks involving input-output relationships continuously orchestrate and learn adaptive patterns of observable behaviors, cognition, memory, mood, and autonomic systems. Taken together, these networks function as "good regulators" determining levels of internal variables and act as if there were homeostatic comparators ("homeostats")...
September 5, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28918162/how-high-level-of-anxiety-in-panic-disorder-can-interfere-in-working-memory-a-computer-simulation-and-electrophysiological-investigation
#14
Luiza Wanick Di Giorgio Silva, Danielle Aprigio, Jesse Di Giacomo, Mariana Gongora, Henning Budde, Juliana Bittencourt, Mauricio Cagy, Silmar Teixeira, Pedro Ribeiro, Marcele Regine de Carvalho, Rafael Freire, Antonio Egidio Nardi, Luis Fernando Basile, Bruna Velasques
Panic disorder (PD) is characterized by repeated and unexpected attacks of intense anxiety, which are not restricted to a determined situation or circumstance. The coherence function has been used to investigate the communication among brain structures through the quantitative EEG (qEEG). The objective of this study is to analyze if there is a difference in frontoparietal gamma coherence (GC) between panic disorder patients (PDP) and healthy controls (HC) during the Visual oddball paradigm; and verify if high levels of anxiety (produced by a computer simulation) affect PDP's working memory...
September 11, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28917336/-the-reconstruction-of-meaning-in-dementia
#15
REVIEW
Philippe Thomas, Gérard Chandès, Cyril Hazif-Thomas
Dementia brings about progressive cognitive deterioration, combining memory problems, language difficulties and thought disorders. While there is currently no treatment for the organic disorders causing the dementia, help can be given to patients to slow down the regressive processes. Psychological mediations exist to support patients in their efforts to make sense of their environment.
September 2017: Soins. Gérontologie
https://www.readbyqxmd.com/read/28917154/neural-activation-in-stress-related-exhaustion-cross-sectional-observations-and-interventional-effects
#16
Hanna Malmberg Gavelin, Anna Stigsdotter Neely, Micael Andersson, Therese Eskilsson, Lisbeth Slunga Järvholm, Carl-Johan Boraxbekk
The primary purpose of this study was to investigate the association between burnout and neural activation during working memory processing in patients with stress-related exhaustion. Additionally, we investigated the neural effects of cognitive training as part of stress rehabilitation. Fifty-five patients with clinical diagnosis of exhaustion disorder were administered the n-back task during fMRI scanning at baseline. Ten patients completed a 12-week cognitive training intervention, as an addition to stress rehabilitation...
September 13, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28916628/the-impact-of-threat-of-shock-induced-anxiety-on-memory-encoding-and-retrieval
#17
Sorcha Bolton, Oliver J Robinson
Anxiety disorders are the most common mental health disorders, and daily transient feelings of anxiety (or "stress") are ubiquitous. However, the precise impact of both transient and pathological anxiety on higher-order cognitive functions, including short- and long-term memory, is poorly understood. A clearer understanding of the anxiety-memory relationship is important as one of the core symptoms of anxiety, most prominently in post-traumatic stress disorder (PTSD), is intrusive reexperiencing of traumatic events in the form of vivid memories...
October 2017: Learning & Memory
https://www.readbyqxmd.com/read/28916448/molecular-and-synaptic-mechanisms-regulating-drug-associated-memories-towards-a-bidirectional-treatment-strategy
#18
REVIEW
Matthew T Rich, Mary M Torregrossa
The successful treatment of substance use disorders is dependent on the establishment of a long-term abstinent state. Relapse can be suppressed by interfering with memories of drug use that are evoked by re-exposure to drug-associated contexts and cues. Two strategies for accomplishing this goal are either to prevent drug-memory reconsolidation or to induce the formation of a competing, extinction memory. However, clinical attempts to prolong abstinence by behavioral modification of drug-related memories have had limited success...
September 12, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28915964/decreased-use-of-spatial-pattern-separation-in-contemporary-lifestyles-may-contribute-to-hippocampal-atrophy-and-diminish-mental-health
#19
Lindy Birkel
The spatial pattern separation process has not yet been proposed as a pivotal neural activity affecting hippocampal volume, a metric of mental health. The dentate gyrus/CA3 region is increasingly implicated in hippocampal atrophy, its putative role in spatial pattern separation appears to be impaired in mental health disorders, and performance on a task indicative of pattern separation correlates with dentate gyrus/CA3 volume. Spatial pattern separation is thought to utilize the heightened neural plasticity of newborn neurons in the dentate gyrus to distinguish highly similar aspects of scene so that these remain distinct in memory rather than lost...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28912686/roles-of-microglial-phagocytosis-and-inflammatory-mediators-in-the-pathophysiology-of-sleep-disorders
#20
REVIEW
Agnes Nadjar, Henna-Kaisa M Wigren, Marie-Eve Tremblay
Sleep serves crucial learning and memory functions in both nervous and immune systems. Microglia are brain immune cells that actively maintain health through their crucial physiological roles exerted across the lifespan, including phagocytosis of cellular debris and orchestration of neuroinflammation. The past decade has witnessed an explosive growth of microglial research. Considering the recent developments in the field of microglia and sleep, we examine their possible impact on various pathological conditions associated with a gain, disruption, or loss of sleep in this focused mini-review...
2017: Frontiers in Cellular Neuroscience
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