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Neurocognition

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https://www.readbyqxmd.com/read/28433855/the-electrophysiology-of-neurohiv-a-systematic-review-of-eeg-and-meg-studies-in-people-with-hiv-infection-since-the-advent-of-highly-active-antiretroviral-therapy
#1
Ana Lucia Fernández-Cruz, Lesley K Fellows
OBJECTIVE: The Human Immunodeficiency Virus (HIV) has an impact on the brain, even when the infection is well-controlled with modern highly-active antiretroviral therapy (HAART). While dementia is rare in those on HAART, milder cognitive impairment is common. The causes, patterns, and evolution of brain dysfunction in people living with HIV remain uncertain. We evaluate whether electrophysiological methods provide informative measures of brain dysfunction in this population. METHODS: A systematic literature search identified studies that used EEG or MEG to evaluate persons living with HIV published between 1996 (when HAART became available) and 2016...
March 31, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28433802/role-of-environmental-stressors-in-determining-the-developmental-outcome-of-neonatal-anesthesia
#2
Ling-Sha Ju, Jiao-Jiao Yang, Nikolaus Gravenstein, Christoph N Seubert, Timothy E Morey, Colin Sumners, Terrie Vasilopoulos, Jian-Jun Yang, Anatoly E Martynyuk
BACKGROUND: The majority of studies evaluating neurocognition in humans who had procedures under anesthesia early in life found long-term deficits even though the typical anesthesia duration normalized to the human life span is much shorter than that shown to induce developmental abnormalities in rodents. Therefore, we studied whether subsequent environmental stressors contribute to deficiencies programmed by a brief neonatal etomidate exposure. METHODS: Postnatal days (P) 4, 5, or 6, Sprague-Dawley rats, pretreated with vehicle or the Na(+)-K(+)-2Cl(-) (NKCC1) inhibitor, bumetanide, received two injections of etomidate resulting in anesthesia for 2h...
April 7, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28433798/randomized-trial-of-early-erythropoietin-supplementation-after-preterm-birth-iron-metabolism-and-outcome
#3
O M Peltoniemi, E Anttila, T Kaukola, G Buonocore, M Hallman
BACKGROUND: Excess of iron and oxidant injury shortly after birth may be associated with neonatal morbidities in preterm infants. AIMS: The aim was to determine whether administration of erythropoietin without iron supplementation decreases iron load and morbidity. STUDY DESIGN AND SUBJECTS: In a randomized trial, we administered erythropoietin (EPO 250IU/kg daily during the first 6days of life) or placebo to 39 preterm infants (BW 700-1500g, GA≤30...
April 20, 2017: Early Human Development
https://www.readbyqxmd.com/read/28433500/psychometric-characteristics-of-the-matrics-consensus-cognitive-battery-in-a-large-pooled-cohort-of-stable-schizophrenia-patients
#4
Anastasia Georgiades, Vicki G Davis, Alexandra S Atkins, Anzalee Khan, Trina W Walker, Antony Loebel, George Haig, Dana C Hilt, Eduardo Dunayevich, Daniel Umbricht, Michael Sand, Richard S E Keefe
The MATRICS Consensus Cognitive Battery (MCCB) was developed to assess cognitive treatment effects in schizophrenia clinical trials, and is considered the FDA gold standard outcome measure for that purpose. The aim of the present study was to establish pre-treatment psychometric characteristics of the MCCB in a large pooled sample. The dataset included 2616 stable schizophrenia patients enrolled in 15 different clinical trials between 2007 and 2016 within the United States (94%) and Canada (6%). The MCCB was administered twice prior to the initiation of treatment in 1908 patients...
April 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28433073/neurocognitive-function-in-clinically-stable-individuals-with-long-term-bipolar-i-disorder-comparisons-with-schizophrenia-patients-and-controls
#5
Pei-Yun Lin, Peng-Wei Wang, Cheng-Sheng Chen, Cheng-Fang Yen
This study compared the levels of the five domains of neurocognitive function-executive function, attention, memory, verbal comprehension, and perceptual organization-among clinically stable individuals with long-term bipolar I disorder, individuals with long-term schizophrenia, and a group of controls. We recruited a total of 93 clinically stable individuals with bipolar I disorder, 94 individuals with schizophrenia, and 106 controls in this study. Their neurocognitive function was measured using a series of neurocognitive function tests: the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III), Line Cancellation Test, Visual Form Discrimination, Controlled Oral Word Association Test, Wisconsin Card Sorting Test, Continuous Performance Task, and Wechsler Memory Scale-Third Edition...
May 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28432011/what-is-an-affordance-40-years-later
#6
REVIEW
François Osiurak, Yves Rossetti, Arnaud Badets
About 40 years ago, James J. Gibson coined the term "affordance" to describe the action possibilities offered to an animal by the environment with reference to the animal's action capabilities. Since then, this notion has acquired a multitude of meanings, generating confusion in the literature. Here, we offer a clear operationalization of the concept of affordances and related concepts in the field of tool use. Our operationalization is organized around the distinction between the physical (what is objectively observable) and neurocognitive (what is subjectively experienced) levels...
April 18, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28431379/the-effects-of-maternal-and-children-phthalate-exposure-on-the-neurocognitive-function-of-6-year-old-children
#7
Johanna Inhyang Kim, Yun-Chul Hong, Choong Ho Shin, Young Ah Lee, Youn-Hee Lim, Bung-Nyun Kim
The primary purpose of this study was to investigate the effects of phthalate exposure on the intelligence and attentional performance of 6-year old children when adjusting each other as covariates. We also investigated the differential effects of phthalate exposure on the intelligence and attention according to exposure period (maternal or children). Urine concentrations of mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), and mono-n-butyl phthalate (MBP) were analyzed...
April 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28431035/medical-symptom-validity-test-performance-following-moderate-severe-traumatic-brain-injury-expectations-based-on-orientation-log-classification
#8
Stephen N Macciocchi, Ronald T Seel, Angela Yi, Sarah Small
Objective: This study examined performance on the Medical Symptom Validity test (MSVT) during acute rehabilitation for moderate-severe traumatic brain injury (TBI) stratified by Orientation Log (O-Log) scores. Method: Participants were 77 prospectively enrolled persons who sustained moderate-severe TBI and were acutely hospitalized secondary to the cognitive, medical and physical sequelae of their TBI. Participants were administered neuropsychological metrics, the O-Log and the MSVT a mean of 44 days post injury...
May 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28431034/effects-of-sleep-loss-on-subjective-complaints-and-objective-neurocognitive-performance-as-measured-by-the-immediate-post-concussion-assessment-and-cognitive-testing
#9
Ryan P J Stocker, Hassen Khan, Luke Henry, Anne Germain
Objective: This study examined the effects of total and partial sleep deprivation on subjective symptoms and objective neurocognitive performance, as measured by the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) in a sample of healthy adults. Method: One-hundred and two, right-handed, healthy participants (between ages 18 and 30 years old) completed three consecutive nights in the sleep laboratory with concurrent continuous polysomnography monitoring...
May 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28430846/a-case-of-bariatric-surgery-related-wernicke-korsakoff-syndrome-with-persisting-anterograde-amnesia
#10
Philip Gerard Gasquoine
Objective: To describe the theoretical and clinical implications of the neuropsychological evaluation of a case of bariatric surgery-related Wernicke-Korsakoff syndrome. Method: The patient was a 37-year old, female, bilingual, bachelor's degree educated, Mexican American public relations consultant without preexisting psychiatric, neurological, or substance abuse history. Recovery from laparoscopic sleeve gastrectomy surgery for morbid obesity was complicated by intraabdominal abscess, multibacterial infection, and prolonged nausea and vomiting...
April 20, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28430044/syntactic-complexity-and-frequency-in-the-neurocognitive-language-system
#11
Yun-Hsuan Yang, William D Marslen-Wilson, Mirjana Bozic
Prominent neurobiological models of language follow the widely accepted assumption that language comprehension requires two principal mechanisms: a lexicon storing the sound-to-meaning mapping of words, primarily involving bilateral temporal regions, and a combinatorial processor for syntactically structured items, such as phrases and sentences, localized in a left-lateralized network linking left inferior frontal gyrus (LIFG) and posterior temporal areas. However, recent research showing that the processing of simple phrasal sequences may engage only bilateral temporal areas, together with the claims of distributional approaches to grammar, raises the question of whether frequent phrases are stored alongside individual words in temporal areas...
April 21, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28429633/the-reliability-of-multidimensional-neuropsychological-measures-from-alpha-to-omega
#12
Marley W Watkins
OBJECTIVE: To demonstrate that Coefficient omega, a model-based estimate, is more a more appropriate index of reliability than coefficient alpha for the multidimensional scales that are commonly employed by neuropsychologists. METHOD: As an illustration, a structural model of an overarching general factor and four first-order factors for the WAIS-IV based on the standardization sample of 2200 participants was identified and omega coefficients were subsequently computed for WAIS-IV composite scores...
April 21, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28429625/trichotillomania-and-its-clinical-relationship-to-depression-and-anxiety
#13
Jon E Grant, Sarah A Redden, Gustavo C Medeiros, Brian L Odlaug, Erin E Curley, Hermano Tavares, Nancy J Keuthen
OBJECTIVE: Trichotillomania (TTM) is associated with high rates of co-occurring depression and anxiety disorders. What the co-occurrence of TTM, depression or anxiety disorders means clinically and cognitively, however, has garnered little research attention. METHODS: About 530 adults with TTM were examined on a variety of clinical measures including symptom severity, psychosocial measures of functioning, psychiatric comorbidity and neurocognitive testing assessing motor inhibition and cognitive flexibility...
April 21, 2017: International Journal of Psychiatry in Clinical Practice
https://www.readbyqxmd.com/read/28429562/predictors-of-the-health-related-quality-of-life-of-chinese-people-with-major-neurocognitive-disorders-and-their-caregivers-the-roles-of-self-esteem-and-caregiver-s-burden
#14
Daniel Kim-Wan Young, Petrus Yat-Nam Ng, Timothy Kwok
AIM: The present research study aimed to identify and compare the clinical and non-clinical factors that predict the self-reported and proxy-reported health-related quality of life (HRQoL) of people with major neurocognitive disorder (PwND) who are living at home in a Chinese society. METHODS: A total of 57 Chinese PwND-family caregiver dyads that were using the services of local senior centers were recruited through a cross-sectional survey with convenience sampling...
April 20, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28429381/the-structural-connectome-of-children-with-traumatic-brain-injury
#15
Marsh Königs, L W Ernest van Heurn, Roel Bakx, R Jeroen Vermeulen, J Carel Goslings, Bwee Tien Poll-The, Marleen van der Wees, Coriene E Catsman-Berrevoets, Jaap Oosterlaan, Petra J W Pouwels
This study aimed to investigate the impact of mild to severe pediatric TBI on the structural connectome. Children aged 8-14 years with trauma control (TC) injury (n = 27) were compared to children with mild TBI and risk factors for complicated TBI (mild(RF+) , n = 20) or moderate/severe TBI (n = 16) at 2.8 years post-injury. Probabilistic tractography on diffusion tensor imaging data was used in combination with graph theory to study structural connectivity. Functional outcome was measured using neurocognitive tests and parent and teacher questionnaires for behavioral functioning...
April 21, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28429289/the-nature-and-consequences-of-cognitive-deficits-among-tobacco-smokers-with-hiv-a-comparison-to-tobacco-smokers-without-hiv
#16
Joseph D Harrison, Jessica A Dochney, Sonja Blazekovic, Frank Leone, David Metzger, Ian Frank, Robert Gross, Anita Hole, Karam Mounzer, Steven Siegel, Robert A Schnoll, Rebecca L Ashare
HIV-infected smokers lose more years of life to tobacco-related disease than HIV. Since neurocognitive deficits are common among those with HIV and are associated with smoking persistence, these deficits may be a unique barrier to smoking cessation among HIV-infected smokers. Documenting unique differences in and correlates of cognition among HIV-infected smokers is a critical step towards developing a population-specific tobacco cessation treatment. We compared neurocognitive function between HIV-infected (n = 103) and HIV-uninfected smokers (n = 70), accounting for demographic and smoking-related variables...
April 20, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28429160/neural-mechanisms-of-risky-decision-making-in-adolescents-reporting-frequent-alcohol-and-or-marijuana-use
#17
Eric D Claus, Sarah W Feldstein Ewing, Renee E Magnan, Erika Montanaro, Kent E Hutchison, Angela D Bryan
Because adolescence is a period of heightened exploration of new behaviors, there is a natural increase in risk taking including initial use of alcohol and marijuana. In order to better understand potential differences in neurocognitive functioning among adolescents who use drugs, the current study aimed to identify the neural substrates of risky decision making that differ among adolescents who are primary users of alcohol or marijuana, primary users of both alcohol and marijuana, and controls who report primary use of neither drug...
April 20, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28428210/proton-chemical-shift-imaging-study-of-the-combined-antiretroviral-therapy-impact-on-neurometabolic-parameters-in-chronic-hiv-infection
#18
J Boban, D Kozic, V Turkulov, D Lendak, M Bjelan, M Semnic, S Brkic
BACKGROUND AND PURPOSE: The introduction of combination antiretroviral therapy has failed to reduce the high prevalence of mild forms of HIV-associated neurocognitive disorders. The aim of this study was to test the effect of combined antiretroviral therapy on brain metabolite ratios in chronic HIV infection by using proton chemical shift imaging. MATERIALS AND METHODS: We performed 2D chemical shift imaging in 91 subjects (31 HIV+ patients with chronic infection on combination antiretroviral therapy, 19 combination antiretroviral therapy-na|fkve HIV+ subjects with chronic infection, and 41 healthy controls), covering frontal and parietal subcortical white and cingulate gyrus gray matter, analyzing ratios of NAA/Cr and Cho/Cr on long-TE and mIns/Cr on short-TE MR spectroscopy...
April 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28427510/central-nervous-system-gliomas
#19
REVIEW
Michele Reni, Elena Mazza, Silvia Zanon, Gemma Gatta, Charles J Vecht
Evidence-based practical guidelines on diagnosis, prognosis, and treatment on the most frequent adult brain tumours are delineated. In Europe, 27,000 new cases of malignant glial tumours and 1000 new cases of malignant ependymal tumours are diagnosed every year. The most common glial tumours are glioblastoma multiforme and anaplastic glioma, comprising more than 50% and 10%, respectively, of the total gliomas. Prognosis of gliomas is generally poor. Environmental and genetic factors have been correlated with an increased risk of developing brain tumours...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28427421/cerebrospinal-fluid-csf-biomarkers-of-iron-status-are-associated-with-csf-viral-load-antiretroviral-therapy-and-demographic-factors-in-hiv-infected-adults
#20
Stephanie M Patton, Quan Wang, Todd Hulgan, James R Connor, Peilin Jia, Zhongming Zhao, Scott L Letendre, Ronald J Ellis, William S Bush, David C Samuels, Donald R Franklin, Harpreet Kaur, Jennifer Iudicello, Igor Grant, Asha R Kallianpur
BACKGROUND: HIV-associated neurocognitive disorder (HAND) remains common, despite antiretroviral therapy (ART). HIV dysregulates iron metabolism, but cerebrospinal fluid (CSF) levels of iron and iron-transport proteins in HIV-infected (HIV+) persons are largely unknown. The objectives of this study were to characterize CSF iron-related biomarkers in HIV+ adults and explore their relationships to known predictors of HAND. METHODS: We quantified total iron, transferrin and heavy-chain (H)-ferritin by immunoassay in CSF sampled by lumbar puncture in 403 HIV+ participants in a multi-center, observational study and evaluated biomarker associations with demographic and HIV-related correlates of HAND [e...
April 21, 2017: Fluids and Barriers of the CNS
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