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https://www.readbyqxmd.com/read/27903817/effects-of-orthostatic-hypotension-on-cognition-in-parkinson-disease
#1
Justin Centi, Roy Freeman, Christopher H Gibbons, Sandy Neargarder, Alexander O Canova, Alice Cronin-Golomb
OBJECTIVE: To investigate the relation between orthostatic hypotension (OH) and posture-mediated cognitive impairment in Parkinson disease (PD) using a cross-sectional and within-group design. METHODS: Individuals without dementia with idiopathic PD included 18 with OH (PDOH) and 19 without OH; 18 control participants were also included. Neuropsychological tests were conducted in supine and upright-tilted positions. Blood pressure was assessed in each posture. RESULTS: The PD groups performed similarly while supine, demonstrating executive dysfunction in sustained attention and response inhibition, and reduced semantic fluency and verbal memory (encoding and retention)...
November 30, 2016: Neurology
https://www.readbyqxmd.com/read/27903327/auditory-vigilance-and-working-memory-in-youth-at-familial-risk-for-schizophrenia-or-affective-psychosis-in-the-harvard-adolescent-family-high-risk-study
#2
Larry J Seidman, Andrea Pousada-Casal, Silvia Scala, Eric C Meyer, William S Stone, Heidi W Thermenos, Elena Molokotos, Jessica Agnew-Blais, Ming T Tsuang, Stephen V Faraone
BACKGROUND: The degree of overlap between schizophrenia (SCZ) and affective psychosis (AFF) has been a recurring question since Kraepelin's subdivision of the major psychoses. Studying nonpsychotic relatives allows a comparison of disorder-associated phenotypes, without potential confounds that can obscure distinctive features of the disorder. Because attention and working memory have been proposed as potential endophenotypes for SCZ and AFF, we compared these cognitive features in individuals at familial high-risk (FHR) for the disorders...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27893766/the-effect-of-binaural-beats-on-visuospatial-working-memory-and-cortical-connectivity
#3
Christine Beauchene, Nicole Abaid, Rosalyn Moran, Rachel A Diana, Alexander Leonessa
Binaural beats utilize a phenomenon that occurs within the cortex when two different frequencies are presented separately to each ear. This procedure produces a third phantom binaural beat, whose frequency is equal to the difference of the two presented tones and which can be manipulated for non-invasive brain stimulation. The effects of binaural beats on working memory, the system in control of temporary retention and online organization of thoughts for successful goal directed behavior, have not been well studied...
2016: PloS One
https://www.readbyqxmd.com/read/27890689/developmental-toxicity-of-nicotine-a-transdisciplinary-synthesis-and-implications-for-emerging-tobacco-products
#4
REVIEW
Lucinda J England, Kjersti Aagaard, Michele Bloch, Kevin Conway, Kelly Cosgrove, Rachel Grana, Thomas J Gould, Dorothy Hatsukami, Frances Jensen, Denise Kandel, Bruce Lanphear, Frances Leslie, James R Pauly, Jenae Neiderhiser, Mark Rubinstein, Theodore A Slotkin, Eliot Spindel, Laura Stroud, Lauren Wakschlag
While the health risks associated with adult cigarette smoking have been well described, effects of nicotine exposure during periods of developmental vulnerability are often overlooked. Using MEDLINE and PubMed literature searches, books, reports and expert opinion, a transdisciplinary group of scientists reviewed human and animal research on the health effects of exposure to nicotine during pregnancy and adolescence. A synthesis of this research supports that nicotine contributes critically to adverse effects of gestational tobacco exposure, including reduced pulmonary function, auditory processing defects, impaired infant cardiorespiratory function, and may contribute to cognitive and behavioral deficits in later life...
November 24, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27874023/methylphenidate-and-memory-and-attention-adaptation-training-for-persistent-cognitive-symptoms-after-traumatic-brain-injury-a-randomized-placebo-controlled-trial
#5
Brenna C McDonald, Laura A Flashman, David B Arciniegas, Robert J Ferguson, Li Xing, Jaroslaw Harezlak, Gwen C Sprehn, Flora M Hammond, Arthur C Maerlender, Carrie L Kruck, Karen L Gillock, Kim Frey, Rachel N Wall, Andrew J Saykin, Thomas W McAllister
The purpose of this multicenter, prospective, randomized, placebo-controlled study was to evaluate and compare the efficacy of two cognitive rehabilitation interventions (Memory and Attention Adaptation Training (MAAT) and Attention Builders Training (ABT)), with and without pharmacologic enhancement (ie, with methylphenidate (MPH) or placebo), for treating persistent cognitive problems after traumatic brain injury (TBI). Adults with a history of TBI at least four months prior to study enrollment with either objective cognitive deficits or subjective cognitive complaints were randomized to receive MPH or placebo and MAAT or ABT, yielding four treatment combinations: MAAT/MPH (N=17), ABT/MPH (N=19), MAAT/placebo (N=17), and ABT/placebo (N=18)...
November 22, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27868211/sound-effects-multimodal-input-helps-infants-find-displaced-objects
#6
Jeanne L Shinskey
Before 9 months, infants use sound to retrieve a stationary object hidden by darkness but not one hidden by occlusion, suggesting auditory input is more salient in the absence of visual input. This article addresses how audiovisual input affects 10-month-olds' search for displaced objects. In AB tasks, infants who previously retrieved an object at A subsequently fail to find it after it is displaced to B, especially following a delay between hiding and retrieval. Experiment 1 manipulated auditory input by keeping the hidden object audible versus silent, and visual input by presenting the delay in the light versus dark...
November 21, 2016: British Journal of Developmental Psychology
https://www.readbyqxmd.com/read/27862172/investigation-of-brain-electrophysiological-properties-among-heroin-addicts-quantitative-eeg-and-event-related-potentials
#7
Farid Motlagh, Fatimah Ibrahim, Rusdi Rashid, Tahereh Seghatoleslam, Hussain Habil
This study aims to introduce a new approach of a comprehensive paradigm to evaluate brain electrophysiological properties among addicts. Electroencephalographic spectral power as well as amplitudes and latencies of mismatch negativity (MMN), P300, and P600 components were evaluated among 19 male heroin addicts and 19 healthy nonsmoker subjects using a paradigm consisting of three subparadigms, namely (1) digit span Wechsler test, (2) auditory oddball, and (3) visual cue-reactivity oddball paradigms. Task 1 provided auditory P300 and P600 in association with working memory...
November 8, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27852803/attention-like-processes-in-insects
#8
REVIEW
Vivek Nityananda
Attention is fundamentally important for sensory systems to focus on behaviourally relevant stimuli. It has therefore been an important field of study in human psychology and neuroscience. Primates, however, are not the only animals that might benefit from attention-like processes. Other animals, including insects, also have to use their senses and select one among many stimuli to forage, avoid predators and find mates. They have evolved different mechanisms to reduce the information processed by their brains to focus on only relevant stimuli...
November 16, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27833574/working-memory-for-sequences-of-temporal-durations-reveals-a-volatile-single-item-store
#9
Sanjay G Manohar, Masud Husain
When a sequence is held in working memory, different items are retained with differing fidelity. Here we ask whether a sequence of brief time intervals that must be remembered show recency effects, similar to those observed in verbal and visuospatial working memory. It has been suggested that prioritizing some items over others can be accounted for by a "focus of attention," maintaining some items in a privileged state. We therefore also investigated whether such benefits are vulnerable to disruption by attention or expectation...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27830992/factors-predictive-of-a-fetal-alcohol-spectrum-disorder-neuropsychological-assessment
#10
Leah N Enns, Nicole M Taylor
A variety of neurodevelopmental impairments related to fetal alcohol spectrum disorder (FASD) diagnoses have been consistently documented. However, it is not clear whether such variables are predictive of a diagnosis. The purpose of the present study is to use logistic regressions to identify predictors of FASD in neuropsychological assessment. Charts of 180 children and adolescents with prenatal alcohol exposure (PAE) who underwent psychological and diagnostic assessment for FASD were retrospectively reviewed...
November 10, 2016: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/27823981/repetitive-transcranial-magnetic-stimulation-improves-cognitive-function-of-alzheimer-s-disease-patients
#11
Junwu Zhao, Zhenguang Li, Yannan Cong, Jinbiao Zhang, Ming Tan, Haixia Zhang, Na Geng, Mengfan Li, Wenwen Yu, Peiyan Shan
Repetitive transcranial magnetic stimulation (rTMS) acts as a kind of widely-applied and non-invasive method in the intervention of some neurological disorders. This prospective, randomized, double-blind, placebo-controlled trial investigates the effect of rTMS on 30 cases of Alzheimer's disease (AD) participants, who were classified into mild and moderate groups. Neuropsychological tests were carried out using the AD Assessment Scale-cognitive subscale (ADAS-cog), Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), and World Health Organization University of California-Los Angeles, Auditory Verbal Learning Test (WHO-UCLA AVLT) before, immediately after, and 6 weeks after the intervention...
November 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27809665/executive-abilities-in-children-with-congenital-visual-impairment-in-mid-childhood
#12
Joe Bathelt, Michelle De Haan, Alison Salt, Naomi Jane Dale
The role of vision and vision deprivation in the development of executive function (EF) abilities in childhood is little understood; aspects of EF such as initiative, attention orienting, inhibition, planning and performance monitoring are often measured through visual tasks. Studying the development and integrity of EF abilities in children with congenital visual impairment (VI) may provide important insights into the development of EF and also its possible relationship with vision and non-visual senses. The current study investigates non-visual EF abilities in 18 school-age children of average verbal intelligence with VI of differing levels of severity arising from congenital disorders affecting the eye, retina, or anterior optic nerve...
November 3, 2016: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/27806079/cycling-on-a-bike-desk-positively-influences-cognitive-performance
#13
Tine Torbeyns, Bas de Geus, Stephen Bailey, Kevin De Pauw, Lieselot Decroix, Jeroen Van Cutsem, Romain Meeusen
PURPOSE: Cycling desks as a means to reduce sedentary time in the office has gained interest as excessive sitting has been associated with several health risks. However, the question rises if people will still be as efficient in performing their desk-based office work when combining this with stationary cycling. Therefore, the effect of cycling at 30% Wmax on typing, cognitive performance and brain activity was investigated. METHODS: After two familiarisation sessions, 23 participants performed a test battery [typing test, Rey auditory verbal learning test (RAVLT), Stroop test and Rosvold continuous performance test (RCPT)] with electroencephalography recording while cycling and sitting on a conventional chair...
2016: PloS One
https://www.readbyqxmd.com/read/27802226/music-perception-in-dementia
#14
Hannah L Golden, Camilla N Clark, Jennifer M Nicholas, Miriam H Cohen, Catherine F Slattery, Ross W Paterson, Alexander J M Foulkes, Jonathan M Schott, Catherine J Mummery, Sebastian J Crutch, Jason D Warren
Despite much recent interest in music and dementia, music perception has not been widely studied across dementia syndromes using an information processing approach. Here we addressed this issue in a cohort of 30 patients representing major dementia syndromes of typical Alzheimer's disease (AD, n = 16), logopenic aphasia (LPA, an Alzheimer variant syndrome; n = 5), and progressive nonfluent aphasia (PNFA; n = 9) in relation to 19 healthy age-matched individuals. We designed a novel neuropsychological battery to assess perception of musical patterns in the dimensions of pitch and temporal information (requiring detection of notes that deviated from the established pattern based on local or global sequence features) and musical scene analysis (requiring detection of a familiar tune within polyphonic harmony)...
October 11, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27798222/predicting-cognition-and-psychosis-in-young-adults-with-22q11-2-deletion-syndrome
#15
Kevin M Antshel, Wanda Fremont, Seetha Ramanathan, Wendy R Kates
OBJECTIVE: To assess the extent to which the trajectories of intellectual, academic achievement, executive functioning, attention, working memory, and emotion recognition tests will be predictive of psychosis in young adults with 22q11.2 deletion syndrome (22q11DS). METHODS: Eighty-two participants with 22q11DS were assessed for psychiatric disorders and neuropsychological functioning with validated instruments. Siblings and community controls were employed as comparison groups...
October 25, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27794628/ageing-effects-on-the-attentional-capacities-and-working-memory-of-people-who-are-blind
#16
Caroline Pigeon, Claude Marin-Lamellet
PURPOSE: Adaptation to blindness can lead to the enhancement of the attentional capacities and working memory in young people. However, although the effects of ageing on the cognition of sighted people and people with age-related visual impairments are well-documented, no study seems to have investigated the age-related changes of these cognitive processes in people who are blind. The aim of this study was to assess the effects of age on the attentional processes and working memory in blind people...
October 29, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27791432/intermodal-attention-shifts-in-multimodal-working-memory
#17
Tobias Katus, Anna Grubert, Martin Eimer
Attention maintains task-relevant information in working memory (WM) in an active state. We investigated whether the attention-based maintenance of stimulus representations that were encoded through different modalities is flexibly controlled by top-down mechanisms that depend on behavioral goals. Distinct components of the ERP reflect the maintenance of tactile and visual information in WM. We concurrently measured tactile (tCDA) and visual contralateral delay activity (CDA) to track the attentional activation of tactile and visual information during multimodal WM...
October 28, 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27760150/the-effects-of-restricted-peripheral-field-of-view-on-spatial-learning-while-navigating
#18
Erica M Barhorst-Cates, Kristina M Rand, Sarah H Creem-Regehr
Recent work with simulated reductions in visual acuity and contrast sensitivity has found decrements in survey spatial learning as well as increased attentional demands when navigating, compared to performance with normal vision. Given these findings, and previous work showing that peripheral field loss has been associated with impaired mobility and spatial memory for room-sized spaces, we investigated the role of peripheral vision during navigation using a large-scale spatial learning paradigm. First, we aimed to establish the magnitude of spatial memory errors at different levels of field restriction...
2016: PloS One
https://www.readbyqxmd.com/read/27734956/the-mglur2-positive-allosteric-modulator-sar218645-improves-memory-and-attention-deficits-in-translational-models-of-cognitive-symptoms-associated-with-schizophrenia
#19
Guy Griebel, Philippe Pichat, Denis Boulay, Vanessa Naimoli, Lisa Potestio, Robert Featherstone, Sukhveen Sahni, Henry Defex, Christophe Desvignes, Franck Slowinski, Xavier Vigé, Olivier E Bergis, Rosy Sher, Raymond Kosley, Sathapana Kongsamut, Mark D Black, Geoffrey B Varty
Normalization of altered glutamate neurotransmission through activation of the mGluR2 has emerged as a new approach to treat schizophrenia. These studies describe a potent brain penetrant mGluR2 positive allosteric modulator (PAM), SAR218645. The compound behaves as a selective PAM of mGluR2 in recombinant and native receptor expression systems, increasing the affinity of glutamate at mGluR2 as inferred by competition and GTPγ(35)S binding assays. SAR218645 augmented the mGluR2-mediated response to glutamate in a rat recombinant mGluR2 forced-coupled Ca(2+) mobilization assay...
October 13, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27717832/hormonal-modulation-of-novelty-processing-in-women-enhanced-under-working-memory-load-with-high-dehydroepiandrosterone-sulfate-to-dehydroepiandrosterone-ratios
#20
Sónia do Vale, Lenka Selinger, João Martin Martins, Manuel Bicho, Isabel do Carmo, Carles Escera
Several studies have suggested that dehydroepiandrosterone (DHEA) and dehydroepiandrosterone-sulfate (DHEAS) may enhance working memory and attention, yet current evidence is still inconclusive. The balance between both forms of the hormone might be crucial regarding the effects that DHEA and DHEAS exert on the central nervous system. To test the hypothesis that higher DHEAS-to-DHEA ratios might enhance working memory and/or involuntary attention, we studied the DHEAS-to-DHEA ratio in relation to involuntary attention and working memory processing by recording the electroencephalogram of 22 young women while performing a working memory load task and a task without working memory load in an audio-visual oddball paradigm...
October 4, 2016: Neuroscience Letters
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