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https://www.readbyqxmd.com/read/27910862/methylphenidate-enhances-early-stage-sensory-processing-and-rodent-performance-of-a-visual-signal-detection-task
#1
Rachel L Navarra, Brian D Clark, Andrew T Gargiulo, Barry D Waterhouse
Methylphenidate (MPH) is used clinically to treat attention-deficit/hyperactivity disorder (ADHD) and off-label as a performance enhancing agent in healthy individuals. MPH enhances catecholamine transmission via blockade of norepinephrine (NE) and dopamine (DA) reuptake transporters. However, it is not clear how this action impacts neural circuits performing cognitive and sensorimotor functions driving performance enhancement. The dorsal lateral geniculate nucleus (dLGN) is the primary thalamic relay for visual information from the retina to the cortex and is densely innervated by NE-containing fibers from the locus coeruleus (LC), a pathway known to modulate state-dependent sensory processing...
December 2, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27909800/cognitive-dysfunction-in-adult-patients-with-neuromyelitis-optica-a-systematic-review-and-meta-analysis
#2
REVIEW
Hao Meng, Jun Xu, Chenling Pan, Jiaxing Cheng, Yue Hu, Yin Hong, Yuehai Shen, Hua Dai
The objective of this study was to investigate cognitive dysfunction in 24-60-year-old neuromyelitis optica (NMO) patients, demographically matched healthy subjects, and MS patients. We conducted a comprehensive literature review of the PubMed, Medline, EMBASE, CNKI, Wan Fang Date, Web of Science, and Cochrane Library databases from inception to May 2016 for case-control studies that reported cognitive test scores in NMO patients, healthy subjects, and MS patients. Outcome measures were cognitive function evaluations, including performance on attention, language, memory, information processing speed, and executive function tests...
December 1, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27908883/association-between-cognitive-complaints-and-vulnerability-to-environmental-distraction-in-multiple-sclerosis
#3
John J Randolph, Jennifer S Randolph, Heather A Wishart
OBJECTIVE: Individuals with multiple sclerosis (MS) often report cognitive dysfunction, although neuropsychological evaluation findings may not correlate with subjective concerns. One factor that may explain this lack of correspondence is the controlled testing environment, which differs from busier settings where cognitive lapses are noted to occur. This study used a novel environmental manipulation to determine whether individuals with MS who report cognitive dysfunction are more vulnerable to the effects of auditory distraction during neuropsychological testing...
December 1, 2016: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/27908748/the-chemotherapeutic-agent-paclitaxel-selectively-impairs-learning-while-sparing-source-memory-and-spatial-memory
#4
Alexandra E Smith, Richard A Slivicki, Andrea G Hohmann, Jonathon D Crystal
: Chemotherapeutic agents are widely used to treat patients with systemic cancer. The efficacy of these therapies is undermined by their adverse side-effect profiles such as cognitive deficits that have a negative impact on the quality of life of cancer survivors. Cognitive side effects occur across a variety of domains, including memory, executive function, and processing speed. Such impairments are exacerbated under cognitive challenges and a subgroup of patients experience long-term impairments...
November 28, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27903935/impairment-of-decision-making-in-multiple-sclerosis-a-neuroeconomic-approach
#5
Maria Sepúlveda, Begoña Fernández-Diez, Elena H Martínez-Lapiscina, Sara Llufriu, Nuria Sola-Valls, Irati Zubizarreta, Yolanda Blanco, Albert Saiz, Dino Levy, Paul Glimcher, Pablo Villoslada
OBJECTIVE: To assess the decision-making impairment in patients with multiple sclerosis (MS) and how they relate to other cognitive domains. METHODS: We performed a cross-sectional analysis in 84 patients with MS, and 21 matched healthy controls using four tasks taken from behavioral economics: (1) risk preferences, (2) choice consistency, (3) delay of gratification, and (4) rate of learning. All tasks were conducted using real-world reward outcomes (food or money) in different real-life conditions...
November 30, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27902848/topiramate-in-migraine-prevention-a-2016-perspective
#6
Stephen D Silberstein
BACKGROUND: In evidence-based guidelines published in 2000, topiramate was a third-tier migraine preventive with no scientific evidence of efficacy; recommendation for its use reflected consensus opinion and clinical experience. Its neurostabilizing activity, coupled with its favorable weight profile, made topiramate an attractive alternative to other migraine preventives that caused weight gain. When guidelines for migraine prevention in episodic migraine were published in 2012, topiramate was included as a first-line option based on double-blind, randomized controlled trials involving nearly 3000 patients...
November 30, 2016: Headache
https://www.readbyqxmd.com/read/27902677/perception-of-fechner-illusory-colors-in-alzheimer-disease-patients
#7
Gintaras Kaubrys, Vera Bukina, Ieva Bingelytė, Vladas Taluntis
BACKGROUND Alzheimer disease (AD) primarily affects cognition. A variety of visual disorders was established in AD. Fechner illusory colors are produced by a rotating disk with a black and white pattern. The purpose of our research was to explore the perception of illusory colors in AD. MATERIAL AND METHODS W recruited 40 AD patients (MMSE ≥14) and 40 normal controls (CG group) matched by age, education, gender in this prospective, cross-sectional, case-control study. An achromatic Benham's disk attached to a device to control the speed and direction of rotation was used to produce illusory colors...
November 30, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27898370/individual-differences-in-cognitive-functioning-predict-effectiveness-of-a-heads-up-lane-departure-warning-for-younger-and-older-drivers
#8
Nazan Aksan, Lauren Sager, Sarah Hacker, Benjamin Lester, Jeffrey Dawson, Matthew Rizzo, Kazutoshi Ebe, James Foley
The effectiveness of an idealized lane departure warning (LDW) was evaluated in an interactive fixed base driving simulator. Thirty-eight older (mean age=77years) and 40 younger drivers (mean age=35years) took four different drives/routes similar in road culture composition and hazards encountered with and without LDW. The four drives were administered over visits separated approximately by two weeks to examine changes in long-term effectiveness of LDW. Performance metrics were number of LDW activations and average correction time to each LDW...
November 26, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27898158/multivariate-assessment-of-subjective-and-objective-measures-of-social-and-family-satisfaction-in-veterans-with-history-of-traumatic-brain-injury
#9
Henry J Orff, Chelsea C Hays, Elizabeth W Twamley
Approximately 20% of current-era Veterans have sustained a traumatic brain injury (TBI), which can result in persistent postconcussive symptoms. These symptoms may disrupt family and social functioning. We explored psychiatric, postconcussive, and cognitive factors as correlates of objective functioning and subjective satisfaction in family and social relationships. At entry into a supported employment study, 50 unemployed Veterans with a history of mild to moderate TBI and current cognitive impairment were administered baseline assessments...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27895568/feasibility-of-a-mobile-cognitive-intervention-in-childhood-absence-epilepsy
#10
Peter Glynn, Soyong Eom, Frank Zelko, Sookyong Koh
Children with childhood absence epilepsy (CAE) frequently present with cognitive comorbidities and school performance concerns. The present study evaluated the feasibility of an intervention for such comorbidities using a mobile cognitive therapy application on an iPad. Eight children with CAE and school concerns aged 7-11 participated in a 4-week intervention. They were asked to use the application for 80 min per week (20 min/day, 4 times/week). Parents and children completed satisfaction surveys regarding the application...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27889886/association-of-midlife-smoking-status-with-change-in-processing-speed-and-mental-flexibility-among-hiv-seropositive-and-hiv-seronegative-older-men-the-multicenter-aids-cohort-study
#11
Wajiha Z Akhtar-Khaleel, Robert L Cook, Steve Shoptaw, Eric N Miller, Ned Sacktor, Pamela J Surkan, Jim Becker, Linda A Teplin, Rebecca J Beyth, Catherine Price, Michael Plankey
Smoking is a potential risk factor for age-related cognitive decline. To date, no study has examined the association between smoking and cognitive decline in men living with human immunodeficiency virus (HIV). The aim of this present study is to examine whether smoking status and severity in midlife is associated with a rate of decline in cognitive processing speed among older HIV-seropositive and HIV-seronegative men who have sex with men. Data from 591 older HIV-seropositive and HIV-seronegative men who have sex with men from the Multicenter AIDS Cohort Study were examined...
November 26, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27886529/autobiographical-and-episodic-memory-deficits-in-mild-traumatic-brain-injury
#12
Jeffrey D Wammes, Tyler J Good, Myra A Fernandes
Those who have suffered a concussion, otherwise known as a mild traumatic brain injury (mTBI), often complain of lingering memory problems. However, there is little evidence in the behavioral literature reliably demonstrating memory deficits. Thus, in the present study, cognitive profiles including measures of general executive functioning and processing speed, as well as episodic and semantic memory were collected in younger and older adult participants with or without a remote (>1year prior to testing) mTBI...
November 22, 2016: Brain and Cognition
https://www.readbyqxmd.com/read/27885064/differential-effects-of-aging-on-motor-and-cognitive-functioning-in-multiple-sclerosis
#13
Shumita Roy, Seth Frndak, Allison S Drake, Lauren Irwin, Robert Zivadinov, Bianca Weinstock-Guttman, Ralph Hb Benedict
BACKGROUND: Multiple sclerosis (MS) patients are impaired in motor and cognitive performance, but the extent to which these deficits are magnified by aging is unknown. In one prior study, differences in cognitive processing speed between MS patients and healthy individuals were of similar magnitude across the lifespan. Here, we have improved on this work by expanding assessment to multiple cognitive domains and motor functioning. OBJECTIVE: To determine whether the degree of cognitive and motor dysfunction in MS is magnified with increasing age...
November 24, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27884623/relationship-between-toxoplasma-gondii-seropositivity-and-acoustic-startle-response-in-an-inner-city-population
#14
Nick M Massa, Erica Duncan, Tanja Jovanovic, Kimberly Kerley, Lei Weng, Lauren Gensler, Samuel S Lee, Seth Norrholm, Abigail Powers, Lynn M Almli, Charles F Gillespie, Kerry Ressler, Bradley D Pearce
Toxoplasma gondii (TOXO) is a neuroinvasive protozoan parasite that induces the formation of persistent cysts in mammalian brains. It infects approximately 1.1 million people in the United States annually. Latent TOXO infection is implicated in the etiology of psychiatric disorders, especially schizophrenia (Scz), and has been correlated with modestly impaired cognition. The acoustic startle response (ASR) is a reflex seen in all mammals. It is mediated by a simple subcortical circuit, and provides an indicator of neural function...
November 21, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/27883963/hypothalamic-pituitary-adrenal-axis-activity-and-cognition-in-major-depression-the-role-of-remission-status
#15
Neus Salvat-Pujol, Javier Labad, Mikel Urretavizcaya, Aida de Arriba-Arnau, Cinto Segalàs, Eva Real, Alex Ferrer, José M Crespo, Susana Jiménez-Murcia, Carles Soriano-Mas, José M Menchón, Virginia Soria
OBJECTIVES: Neuropsychological deficits and hypothalamic-pituitary-adrenal (HPA) axis dysfunction have been described in major depressive disorder (MDD). We conducted an exploratory study to investigate the role of remission status in the relationship between HPA axis and cognition in MDD. METHODS: Ninety-seven MDD patients (44 remitted, 53 non-remitted) and 97 healthy controls (HC) were evaluated. We measured verbal and visual memory, working memory, processing speed, attention, and executive function...
November 10, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27877123/mobility-and-upright-posture-are-associated-with-different-aspects-of-cognition-in-older-adults
#16
Rajal G Cohen, Anita N Vasavada, Michelle M Wiest, Maureen Schmitter-Edgecombe
Objectives: Aging is associated with cognitive decline, including visuomotor and memory concerns, and with motor system changes, including gait slowing and stooped posture. We investigated the associations of visuomotor performance and episodic memory with motor system characteristics in healthy older adults. Methods: Neurologically healthy older adults (N = 160, aged 50-89) completed a battery of cognitive and motor tasks. Cognitive variables were grouped by principal components analysis (PCA) into two components: visuomotor performance and verbal episodic memory...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27877045/serum-low-density-lipoprotein-levels-statin-use-and-cognition-in-patients-with-coronary-artery-disease
#17
Soham Rej, Mahwesh Saleem, Nathan Herrmann, Anthi Stefatos, Allison Rau, Krista L Lanctôt
AIM: Statins have been associated with decreased cognition due to the effects of low concentrations of low-density lipoprotein (LDL) on brain function. This has remained controversial and is particularly relevant to patients with coronary artery disease (CAD), who have an increased risk of cognitive decline and are frequently prescribed statins. This study hypothesized that low concentration of LDL is associated with poor cognition in CAD patients using statins. It also explored the association between high-dose versus low-dose statins on cognition in this population...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27876096/a-randomised-controlled-trial-of-the-effects-of-very-low-carbohydrate-and-high-carbohydrate-diets-on-cognitive-performance-in-patients-with-type-2-diabetes
#18
Jeannie Tay, Ian T Zajac, Campbell H Thompson, Natalie D Luscombe-Marsh, Vanessa Danthiir, Manny Noakes, Jonathan D Buckley, Gary A Wittert, Grant D Brinkworth
This study compared the longer-term effects of a very low-carbohydrate, high-fat diet with a high-carbohydrate, low-fat diet on cognitive performance in individuals with type 2 diabetes (T2D). In total, 115 obese adults with T2D (sixty-six males, BMI: 34·6 (sd 4·3) kg/m2, age: 58 (sd 7) years, HbA1c: 7·3 (sd 1·1) %, diabetes duration: 8 (sd 6) years) were randomised to consume either an energy-restricted, very low-carbohydrate, low-saturated-fat (LC) diet or an energy-matched high unrefined carbohydrate, low-fat (HC) diet with supervised aerobic/resistance exercise (60 min, 3 d/week) for 52 weeks...
November 23, 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27874301/cognitive-predictors-of-performance-in-well-trained-table-tennis-players-with-intellectual-disability
#19
Debbie Van Biesen, Jennifer Mactavish, Janne Kerremans, Yves C Vanlandewijck
Evidence-based classification systems in Paralympic sport require knowledge of the underlying effect of impairment in a specific sport. This study investigated the relationship between cognition and tactical proficiency in 88 well-trained table tennis players with intellectual disability (ID; 29 women, 59 men, M ± SD IQ 59.9 ± 9.6). Data were collected at 3 competitions sanctioned by the International Federation for Para-Athletes with Intellectual Disabilities (INAS). A generic cognitive test consisting of 8 neuropsychological subtests was used to assess cognitive abilities relevant to sport (reaction time, processing speed, and decision speed; spatial visualization; fluid reasoning; memory; executive functioning; and visual processing)...
October 2016: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/27872376/the-multi-component-nature-of-statistical-learning
#20
REVIEW
Joanne Arciuli
The central argument presented in this paper is that statistical learning (SL) is an ability comprised of multiple components that operate largely implicitly. Components relating to the stimulus encoding, retention and abstraction required for SL may include, but are not limited to, certain types of attention, processing speed and memory. It is likely that individuals vary in terms of the efficiency of these underlying components, and in patterns of connectivity among these components, and that SL tasks differ from one another in how they draw on certain underlying components more than others...
January 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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