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Executive functions

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https://www.readbyqxmd.com/read/29792908/acute-effects-of-caffeine-on-threat-selective-attention-moderation-by-anxiety-and-eeg-theta-beta-ratio
#1
Dana van Son, Rik Schalbroeck, Angelos Angelidis, Nic van der Wee, Willem van der Does, Peter Putman
BACKGROUND: Spontaneous EEG theta/beta ratio (TBR) probably marks prefrontal cortical (PFC) executive control, and its regulation of attentional threat-bias. Caffeine at moderate doses may strengthen executive control through increased PFC catecholamine action, dependent on basal PFC function. GOAL: To test if caffeine affects threat-bias, moderated by baseline frontal TBR and trait-anxiety. METHODS: A pictorial emotional Stroop task was used to assess threat-bias in forty female participants in a cross-over, double-blind study after placebo and 200 mg caffeine...
May 21, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29792495/first-grade-classroom-level-adversity-associations-with-teaching-practices-academic-skills-and-executive-functioning
#2
Tashia Abry, Kristen L Granger, Crystal I Bryce, Michelle Taylor, Jodi Swanson, Robert H Bradley
Using data from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development and a model-building approach, the authors examined direct and indirect associations between first-grade (G1) classroom-level adversity (CLA), G1 teaching practices, and student (N = 1,073; M = 6.64 years; 49% girls; 82% White) academic skills and executive functioning in G1 and third grades (G3). Teachers reported the prevalence of adversity among their students (e.g., poor home/family life, poor academic/social readiness)...
May 24, 2018: School Psychology Quarterly
https://www.readbyqxmd.com/read/29792473/cognitive-and-affective-associations-with-an-ecologically-valid-test-of-theory-of-mind-across-the-lifespan
#3
Emilie Johansson Nolaker, Kim Murray, Francesca Happé, Rebecca A Charlton
OBJECTIVES: Many studies have demonstrated that theory of mind (ToM) ability declines with increasing age. Research has found that ToM-age associations are often mediated by other cognitive abilities particularly executive function. However, older adults rarely complain about real-world ToM difficulties. It has been suggested that older adults may perform better in real-world situations compared with experimental settings. METHOD: We examined performance on the Strange Stories Film Task (SSFT) which has been designed to assess ToM using naturalistic, video scenarios...
May 24, 2018: Neuropsychology
https://www.readbyqxmd.com/read/29791867/longitudinal-assessment-of-chemotherapy-induced-changes-in-brain-and-cognitive-functioning-a-systematic-review
#4
REVIEW
Mingmei Li, Karen Caeyenberghs
In addition to the burden of a life-threatening diagnosis, cancer patients are struggling with adverse side-effects from cancer treatment. Chemotherapy has been linked to an array of cognitive impairments and alterations in brain structure and function ("chemobrain"). In this review, we summarized the existing evidence that evaluate the changes in cognitive functioning and brain with chemotherapy, as assessed using structural and functional MRI-based techniques in a longitudinal design. This review followed the latest PRISMA guidelines using Embase, Medline, PsychINFO, Scopus, and Web of Science databases with date restrictions from 2012-2017...
May 20, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29791865/executive-and-arousal-vigilance-decrement-in-the-context-of-the-attentional-networks-the-anti-vea-task
#5
Fernando Gabriel Luna, Julián Marino, Javier Roca, Juan Lupiáñez
BACKGROUND: Vigilance is generally understood as the ability to detect infrequent critical events through long time periods. In tasks like the Sustained Attention to Response Task (SART), participants tend to detect fewer events across time, a phenomenon known as "vigilance decrement". However, vigilance might also involve sustaining a tonic arousal level. In the Psychomotor Vigilance Test (PVT), the vigilance decrement corresponds to an increment across time in both mean and variability of reaction time...
May 20, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29791355/laser-coarse-fine-coupling-tracking-by-cascaded-rotation-risley-prism-pairs
#6
Anhu Li, Wansong Sun, Xingsheng Liu, Wei Gong
Rotation Risley prisms are increasingly used for laser tracking due to high precision and good dynamic performance. In this paper, a novel laser coarse-fine coupling tracking method based on two pairs of rotation Risley prisms is proposed to perform the forward and inverse tracking function. The second pair of rotation Risley prisms with narrower wedge angle can achieve higher precision tracking with narrower field of view than the first one, enriching the coarse-fine coupling tracking trajectory patterns. Moreover, an inverse algorithm based on the two-step method and Newton's iterative method is applied to solve the inverse issue for laser coarse-fine coupling tracking...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29791298/the-influence-of-dopamine-on-cognitive-flexibility-is-mediated-by-functional-connectivity-in-young-but-not-older-adults
#7
Anne S Berry, Vyoma D Shah, William J Jagust
Dopaminergic signaling in striatum is strongly implicated in executive functions including cognitive flexibility. However, there is a paucity of multimodal research in humans defining the nature of relationships between endogenous dopamine, striatal network activity, and cognition. Here, we measured dopamine synthesis capacity in young and older adults using the PET tracer 6-[18 F]fluoro-l- m-tyrosine and examined its relationship with cognitive performance and functional connectivity during an fMRI study of task switching...
May 23, 2018: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29791271/language-skills-but-not-frequency-discrimination-predict-reading-skills-in-children-at-risk-of-dyslexia
#8
Margaret J Snowling, Debbie Gooch, Genevieve McArthur, Charles Hulme
This study evaluated the claim that auditory processing deficits are a cause of reading and language difficulties. We report a longitudinal study of 245 children at family risk of dyslexia, children with preschool language impairments, and control children. Children with language impairments had poorer frequency-discrimination thresholds than controls at 5.5 years, but children at family risk of dyslexia did not. A model assessing longitudinal relationships among frequency discrimination, reading, language, and executive function skills showed that frequency discrimination was predicted by executive skills but was not a longitudinal predictor of reading or language skills...
May 1, 2018: Psychological Science
https://www.readbyqxmd.com/read/29790984/co-translational-protein-targeting-in-bacteria
#9
Ruth Steinberg, Lara Knüpffer, Andrea Origi, Rossella Asti, Hans-Georg Koch
About 30% of all bacterial proteins execute their function outside of the cytosol and have to be transported into or across the cytoplasmic membrane. Bacteria use multiple protein transport systems in parallel, but the majority of proteins engage two distinct targeting systems. One is the co-translational targeting by two universally conserved GTPases, the signal recognition particle (SRP) and its receptor FtsY, which deliver inner membrane proteins to either the SecYEG translocon or the YidC insertase for membrane insertion...
June 1, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29790971/brain-activity-associated-with-attention-deficits-following-chemotherapy-for-childhood-acute-lymphoblastic-leukemia
#10
Slim Fellah, Yin T Cheung, Matthew A Scoggins, Ping Zou, Noah D Sabin, Ching-Hon Pui, Leslie L Robison, Melissa M Hudson, Robert J Ogg, Kevin R Krull
Background: The impact of contemporary chemotherapy treatment for childhood acute lymphoblastic leukemia on central nervous system activity is not fully appreciated. Methods: Neurocognitive testing and functional magnetic resonance imaging (fMRI) were obtained in 165 survivors five or more years postdiagnosis (average age = 14.4 years, 7.7 years from diagnosis, 51.5% males). Chemotherapy exposure was measured as serum concentration of methotrexate following high-dose intravenous injection...
May 21, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29790907/application-of-network-smoothing-to-glycan-lc-ms-profiling
#11
Joshua Klein, Luis Carvalho, Joseph Zaia
Motivation: Glycosylation is one of the most heterogeneous and complex protein post-translational modifications. Liquid chromatography coupled mass spectrometry (LC-MS) is a common high throughput method for analyzing complex biological samples. Accurate study of glycans require high resolution mass spectrometry. Mass spectrometry data contains intricate sub-structures that encode mass and abundance, requiring several transformations before it can be used to identify biological molecules, requiring automated tools to analyze samples in a high throughput setting...
May 22, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29790729/prenatal-phthalates-maternal-thyroid-function-and-risk-of-attention-deficit-hyperactivity-disorder-in-the-norwegian-mother-and-child-cohort
#12
Stephanie M Engel, Gro D Villanger, Rachel C Nethery, Cathrine Thomsen, Amrit K Sakhi, Samantha S M Drover, Jane A Hoppin, Pal Zeiner, Gun Peggy Knudsen, Ted Reichborn-Kjennerud, Amy H Herring, Heidi Aase
BACKGROUND: There is growing concern that phthalate exposures may have an impact on child neurodevelopment. Prenatal exposure to phthalates has been linked with externalizing behaviors and executive functioning defects suggestive of an attention-deficit hyperactivity disorder (ADHD) phenotype. OBJECTIVES: We undertook an investigation into whether prenatal exposure to phthalates was associated with clinically confirmed ADHD in a population-based nested case-control study of the Norwegian Mother and Child Cohort (MoBa) between the years 2003 and 2008...
May 10, 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29790568/-social-cognition-and-cognitive-functions-in-patients-with-epilepsy-treated-with-eslicarbazepine-acetate
#13
L Abraira, A Sanabria, G Ortega, M Quintana, E Santamarina, J Salas-Puig, M Toledo
INTRODUCTION: Epilepsy is accompanied by cognitive disorders, frequently aggravated by the use of antiepileptic drugs, which can affect social empathy. AIM: To analyse the impact of treatment with eslicarbazepine acetate (ESL) on social cognition and prefrontal cognitive functions in adults with focal epilepsy. PATIENTS AND METHODS: We conducted a prospective single-centre study with patients aged between 18 and 65 years with focal seizures treated with ESL...
June 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29789401/treatment-with-eucalyptol-mitigates-cigarette-smoke-induced-lung-injury-through-suppressing-icam-1-gene-expression
#14
Na Yu, Yi-Tian Sun, Xin-Ming Su, Miao He, Bing Dai, Jian Kang
Objectives : This study was conducted to investigate of the clinical significance of Eucalyptol in treating cigarette smoke-induced lung injury with the potential mechanism involved in the event. Methods : Rats were exposed to air (control) and cigarette smoke (smoking) after they were treated with Eucalyptol (260mg/kg) orally once a day for 12 weeks. Cell counts of bronchoalveolar lavage fluid (BALF), measurements of mean liner intercept (MLI) and mean alveolar number (MAN) and lung function test were executed in experimental animals...
May 22, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29789378/subthalamic-nucleus-neurons-differentially-encode-early-and-late-aspects-of-speech-production
#15
W J Lipski, A Alhourani, T Pirnia, P W Jones, C Dastolfo-Hromack, L B Helou, D J Crammond, S Shaiman, M W Dickey, L L Holt, R S Turner, J A Fiez, R M Richardson
Basal ganglia-thalamocortical loops mediate all motor behavior, yet little detail is known about the role of basal ganglia nuclei in speech production. Using intracranial recording during deep brain stimulation surgery in humans with Parkinson's disease, we tested the hypothesis that the firing rate of subthalamic nucleus neurons is modulated in sync with motor execution aspects of speech. Nearly half of seventy-nine unit recordings exhibited firing rate modulation, during a syllable reading task across twelve subjects (male and female)...
May 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29789090/the-giant-hand-illusion-experienced-on-a-simulator
#16
Petr Frantis, Antonin Petru
BACKGROUND: This paper discusses a special kind of a sensory illusion-the Giant Hand illusion-that was experienced during an exercise on a flight simulator equipped with a VR headset. In the first part we describe spatial disorientation and the function of the vestibular apparatus during flight and its consequences. In this part, the sensory illusion simulator used for the experiment is mentioned. In the second part we describe the simulator and test flight. In the third part we discuss data retrieved during simulator flights that are important for explaining the Giant Hand illusion...
June 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29789032/neuropsychological-correlates-of-instrumental-activities-of-daily-living-in-neurocognitive-disorders-a-possible-role-for-executive-dysfunction-and-mood-changes
#17
Martina Amanzio, Sara Palermo, Milena Zucca, Rosalba Rosato, Elisa Rubino, Daniela Leotta, Massimo Bartoli, Innocenzo Rainero
ABSTRACTSince baseline executive dysfunction predicts worsening Instrumental Activities of Daily Living (i-ADL) over time and progression to Alzheimer's Disease (AD), we aimed to analyze the role of neuropsychological variables to outline which factors can contribute to functional impairment. Specific attention to executive functions (EFs) has been given.A total of 144 subjects complaining of different cognitive deficits - ranging from "MCI likely due to AD" to "mild AD patients" - underwent an overall neuropsychological assessment...
May 23, 2018: International Psychogeriatrics
https://www.readbyqxmd.com/read/29788731/claudin-7-cldn7-is-overexpressed-in-gastric-cancer-and-promotes-gastric-cancer-cell-proliferation-invasion-and-maintains-mesenchymal-state
#18
Z Wu, J Shi, Y Song, J Zhao, J Sun, X Chen, P Gao, Z Wang
Gastric cancer (GC) ranks as the fourth most common cancer worldwide and is among the most aggressive types of cancer. Claudin-7 (CLDN7) has been found to be aberrantly expressed in some types of cancers. However, the expression and role of CLDN7 on gastric cancer (GC) remain largely unknown. In this study, we have performed the largest expression analysis study to date of CLDN7 in 113 pairs of human GC tissues and non-tumorous adjacent tissues. We found CLDN7 expression is significantly elevated in GC tissues, and the overexpression of CLDN7 is closely related to lymph node metastasis...
March 14, 2018: Neoplasma
https://www.readbyqxmd.com/read/29788390/cognitive-performance-as-predictor-and-outcome-of-adolescent-bariatric-surgery-a-nonrandomized-pilot-study
#19
Eleanor R Mackey, Marni Jacobs, Evan P Nadler, Alexandra Olson, Alaina Pearce, J Bradley C Cherry, Sheela N Magge, Michele Mietus-Snyer, Chandan Vaidya
Objectives: Evidence in adults suggests that improvements in cognitive performance may follow weight loss resulting from bariatric surgery, and baseline cognitive performance may be associated with weight loss following surgery. This has not been evaluated in adolescents. Method: Participants were 38 adolescents of age 14-21 years composed of three groups: (1) 12 adolescents with severe obesity who received vertical sleeve gastrectomy during the study (VSG); (2) 14 adolescents with severe obesity who were wait-listed for VSG (WL); and (3) 12 healthy weight controls (HC)...
May 16, 2018: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29788381/the-role-of-apathy-and-depression-on-verbal-learning-and-memory-performance-after-stroke
#20
Keera N Fishman, Andrea R Ashbaugh, Krista L Lanctôt, Megan L Cayley, Nathan Herrmann, Brian J Murray, Michelle Sicard, Karen Lien, Demetrios J Sahlas, Richard H Swartz
Objective: Psychiatric symptoms, including depression and apathy, may significantly impede functional and cognitive capabilities following a cerebrovascular event. This study examined the role of apathy and depression on learning and memory performance in stroke patients. Method: Stroke patients (n = 140 [119 ischemic, 21 hemorrhagic], mean age = 60.6 [SD = 15.1]) completed the Apathy Evaluation Scale (AES), the Center for Epidemiologic Studies Depression Scale (CES-D), and the California Verbal Learning Test-Second Edition (CVLT-II)...
May 18, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
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