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https://www.readbyqxmd.com/read/27919474/a-study-of-cognitive-fatigue-in-multiple-sclerosis-with-novel-clinical-and-electrophysiological-parameters-utilizing-the-event-related-potential-p300
#1
Somasundaram Aadhimoolam Chinnadurai, Srinivasan Avathvadi Venkatesan, Gobinathan Shankar, Balasubramanian Samivel, Lakshmi Narasimhan Ranganathan
BACKGROUND: Although cognitive fatigue plays a significant part in Multiple Sclerosis (MS) related impairment, knowledge regarding it is largely lacking. Until now, not many tools are available to a clinician to detect cognitive fatigue. The subjective tools of fatigue have never been reliable.tabl OBJECTIVES: To assess the prevalence and clinical/ demographic profile of cognitive fatigue in MS using novel clinical and electrophysiological measures and to find their accuracy. We also aimed to test the three leading hypotheses - the temporal fatigue, cognitive load and cognitive domain hypotheses of cognitive fatigue in MS...
November 2016: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/27917117/training-on-working-memory-and-inhibitory-control-in-young-adults
#2
Maria J Maraver, M Teresa Bajo, Carlos J Gomez-Ariza
Different types of interventions have focused on trying to improve Executive Functions (EFs) due to their essential role in human cognition and behavior regulation. Although EFs are thought to be diverse, most training studies have targeted cognitive processes related to working memory (WM), and fewer have focused on training other control mechanisms, such as inhibitory control (IC). In the present study, we aimed to investigate the differential impact of training WM and IC as compared with control conditions performing non-executive control activities...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27916731/associations-between-the-cntnap2-gene-dorsolateral-prefrontal-cortex-and-cognitive-performance-on-the-stroop-task
#3
Bi Zhu, Chuansheng Chen, Gui Xue, Xuemei Lei, Yunxin Wang, Jin Li, Robert K Moyzis, Jun Li, Qi Dong, Chongde Lin
The CNTNAP2 (contactin associated protein-like 2) gene, highly expressed in the human prefrontal cortex, has been linked with autism and language impairment. Potential relationships between CNTNAP2, dorsolateral prefrontal cortex (DLPFC), and cognition have been suggested by previous clinical studies, but have not been directly examined in the same study. The current study collected structural MRI, genetic, and behavioral data in 317 healthy Chinese adults, and examined associations between CNTNAP2 variants, DLPFC, and cognitive performance (measured by the Stroop task)...
December 1, 2016: Neuroscience
https://www.readbyqxmd.com/read/27916140/moderate-alcohol-consumption-after-a-mental-stressor-attenuates-the-endocrine-stress-response
#4
I C Schrieks, M M Joosten, W A A Klöpping-Ketelaars, R F Witkamp, H F J Hendriks
Alcohol is often consumed to reduce tension and improve mood when exposed to stressful situations. Previous studies showed that moderate alcohol consumption may reduce stress when alcohol is consumed prior to a stressor, but data on the effect of alcohol consumption after a mental stressor is limited. Therefore, our objective was to study whether moderate alcohol consumption immediately after a mental stressor attenuates the stress response. Twenty-four healthy men (age 21-40 y, BMI 18-27 kg/m(2)) participated in a placebo-controlled trial...
December 2016: Alcohol
https://www.readbyqxmd.com/read/27915364/focusing-on-task-conflict-in-the-stroop-effect
#5
Olga Entel, Joseph Tzelgov
Two types of conflict underlie performance in the Stroop task-informational (between the incongruent word and its ink color) and task (between the relevant color-naming task and the irrelevant word-reading task). We manipulated congruent-to-neutral trial ratio in an attempt to reveal whether task conflict can be monitored and controlled in the absence of an informational conflict. In our first experiment, no incongruent trials were included, thus allowing examination of a pure task conflict situation. The results revealed an impressively large facilitation when most of the stimuli were congruent and a smaller yet significant facilitation when most of the stimuli were neutrals...
December 3, 2016: Psychological Research
https://www.readbyqxmd.com/read/27911221/the-effect-of-a-third-party-observer-and-trait-anxiety-on-neuropsychological-performance-the-attentional-control-theory-act-perspective
#6
Fatemeh Rezaei, Nasrin Alsadat Hosseini Ramaghani, Rachel L Fazio
OBJECTIVE: Studies have reported that the presence of a third party observer (TPO) during neuropsychological assessments negatively affects the test performance of the examinee. The present study aimed to investigate the effects of a TPO and trait anxiety on neuropsychological performance according to Attentional Control Theory (ACT). METHOD: A sample of college students was recruited (n = 318) and then 80 participants were selected to represent the high and low trait anxiety groups...
December 2, 2016: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/27907134/reward-contingencies-improve-goal-directed-behavior-by-enhancing-posterior-brain-attentional-regions-and-increasing-corticostriatal-connectivity-in-cocaine-addicts
#7
Patricia Rosell-Negre, Juan-Carlos Bustamante, Paola Fuentes-Claramonte, Víctor Costumero, Juan-José Llopis-Llacer, Alfonso Barrós-Loscertales
The dopaminergic system provides the basis for the interaction between motivation and cognition. It is triggered by the possibility of obtaining rewards to initiate the neurobehavioral adaptations necessary to achieve them by directing the information from motivational circuits to cognitive and action circuits. In drug addiction, the altered dopamine (DA) modulation of the meso-cortico-limbic reward circuitry, such as the prefrontal cortex (PFC), underlies the disproportionate motivational value of drug use at the expense of other non-drug reinforcers and the user's loss of control over his/her drug intake...
2016: PloS One
https://www.readbyqxmd.com/read/27899907/context-specific-proportion-congruency-effects-an-episodic-learning-account-and-computational-model
#8
James R Schmidt
In the Stroop task, participants identify the print color of color words. The congruency effect is the observation that response times and errors are increased when the word and color are incongruent (e.g., the word "red" in green ink) relative to when they are congruent (e.g., "red" in red). The proportion congruent (PC) effect is the finding that congruency effects are reduced when trials are mostly incongruent rather than mostly congruent. This PC effect can be context-specific. For instance, if trials are mostly incongruent when presented in one location and mostly congruent when presented in another location, the congruency effect is smaller for the former location...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27897669/domain-general-stroop-performance-and-hemispheric-asymmetries-a-resting-state-eeg-study
#9
Ettore Ambrosini, Antonino Vallesi
The ability to suppress irrelevant information while executing a task or interference resistance is a function of pFC that is critical for successful goal-directed human behavior. In the study of interference resistance and, more generally, executive functions, two key questions are still open: Does pFC contribute to cognitive control abilities through lateralized but domain-general mechanisms or through hemispheric specialization of domain-specific processes? And what are the underlying causes of interindividual differences in executive control performance? To shed light on these issues, here we employed an interindividual difference approach to investigate whether participants' hemispheric asymmetry in resting-state electrophysiological brain dynamics may reflect their variability in domain-general interference resistance...
November 29, 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27895985/multi-channel-multi-distance-broadband-near-infrared-spectroscopy-system-to-measure-the-spatial-response-of-cellular-oxygen-metabolism-and-tissue-oxygenation
#10
Phong Phan, David Highton, Jonathan Lai, Martin Smith, Clare Elwell, Ilias Tachtsidis
We present a multi-channel, multi-distance broadband near-infrared spectroscopy (NIRS) system with the capability of measuring changes in haemoglobin concentrations (Δ[HbO2], Δ[HHb]), oxidation state of cytochrome-c-oxidase (Δ[oxCCO]) and tissue oxygen saturation (TOI) in the adult human brain. The main components of the instrument are two customized spectrographs and two light sources. Each spectrograph is lens-based to improve light throughput, has a grating enhanced to optimise reflection in the near-infrared (NIR) spectral region and uses a front illuminated cooled CCD camera (-70° C) with a square chip dimension of 12...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27895564/neural-systems-underlying-emotional-and-non-emotional-interference-processing-an-ale-meta-analysis-of-functional-neuroimaging-studies
#11
Min Xu, Guiping Xu, Yang Yang
Understanding how the nature of interference might influence the recruitments of the neural systems is considered as the key to understanding cognitive control. Although, interference processing in the emotional domain has recently attracted great interest, the question of whether there are separable neural patterns for emotional and non-emotional interference processing remains open. Here, we performed an activation likelihood estimation meta-analysis of 78 neuroimaging experiments, and examined common and distinct neural systems for emotional and non-emotional interference processing...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27894358/attentional-and-affective-consequences-of-technology-supported-mindfulness-training-a-randomised-active-control-efficacy-trial
#12
Sheffy Bhayee, Patricia Tomaszewski, Daniel H Lee, Graeme Moffat, Lou Pino, Sylvain Moreno, Norman A S Farb
BACKGROUND: Mindfulness training (MT) programs represent an approach to attention training with well-validated mental health benefits. However, research supporting MT efficacy is based predominantly on weekly-meeting, facilitator-led, group-intervention formats. It is unknown whether participants might benefit from neurofeedback-assisted, technology-supported MT (N-tsMT), in which meditation is delivered individually, without the need for a facilitator, travel to a training site, or the presence of a supportive group environment...
November 29, 2016: BMC Psychology
https://www.readbyqxmd.com/read/27892513/dissociable-early-attentional-control-mechanisms-underlying-cognitive-and-affective-conflicts
#13
Taolin Chen, Keith M Kendrick, Chunliang Feng, Shiyue Sun, Xun Yang, Xiaogang Wang, Wenbo Luo, Suyong Yang, Xiaoqi Huang, Pedro A Valdés-Sosa, Qiyong Gong, Jin Fan, Yue-Jia Luo
It has been well documented that cognitive conflict is sensitive to the relative proportion of congruent and incongruent trials. However, few studies have examined whether affective conflict processing is modulated as a function of proportion congruency (PC). To address this question we recorded event-related potentials (ERP) while subjects performed both cognitive and affective face-word Stroop tasks. By varying the proportion of congruent and incongruent trials in each block, we examined the extent to which PC impacts both cognitive and affective conflict control at different temporal stages...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27890303/cognitive-effects-of-creatine-monohydrate-adjunctive-therapy-in-patients-with-bipolar-depression-results-from-a-randomized-double-blind-placebo-controlled-trial
#14
REVIEW
Ricardo Alexandre Toniolo, Francy de Brito Ferreira Fernandes, Michelle Silva, Rodrigo da Silva Dias, Beny Lafer
BACKGROUND: Depressive episodes and cognitive impairment are major causes of morbidity and dysfunction in individuals suffering from bipolar disorder (BD). Novel treatment approaches that target clinical and cognitive aspects of bipolar depression are needed, and research on pathophysiology suggests that mitochondrial modulators such as the nutraceutical creatine monohydrate might have a therapeutic role for this condition. METHODS: Eighteen (N=18) patients with bipolar depression according to DSM-IV criteria who were enrollled in a 6-week, randomized, double-blind, placebo-controlled trial of creatine monohydrate 6g daily as adjunctive therapy were submitted to neuropsychological assessments (Wisconsin Card Sorting Test, Digit Span subtest of the Wechsler Adult Intelligence Scale-Third Edition, Stroop Color-Word Test, Rey-Osterrieth complex figure test, FAS Verbal Fluency Test) at baseline and week 6...
November 20, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27884751/a-systematic-review-of-the-effect-of-cannabidiol-on-cognitive-function-relevance-to-schizophrenia
#15
REVIEW
Ashleigh L Osborne, Nadia Solowij, Katrina Weston-Green
BACKGROUND AND OBJECTIVES: Cognitive impairment is a core symptom domain of schizophrenia, neurological disorders and substance abuse. It is characterised by deficits in learning, memory, attention and executive functioning and can severely impact daily living. Antipsychotic drugs prescribed to treat schizophrenia provide limited cognitive benefits and novel therapeutic targets are required. Cannabidiol (CBD), a component of the cannabis plant, has anti-inflammatory and antipsychotic-like properties; however, its ability to improve cognitive impairment has not been thoroughly explored...
November 21, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27882631/adolescents-inhibitory-control-keep-it-cool-or-lose-control
#16
Ania Aïte, Mathieu Cassotti, Adriano Linzarini, Anaïs Osmont, Olivier Houdé, Grégoire Borst
Inhibitory control (i.e., the ability to resist automatisms, temptations, distractions, or interference and to adapt to conflicting situations) is a determinant of cognitive and socio-emotional development. In light of the discrepancies of previous findings on the development of inhibitory control in affectively charged contexts, two important issues need to be addressed. We need to determine (a) whether cool inhibitory control (in affectively neutral contexts) and hot inhibitory control (in affectively charged contexts) follow the same developmental pattern and (b) the degree of specificity of these two types of inhibitory control at different ages...
November 23, 2016: Developmental Science
https://www.readbyqxmd.com/read/27876508/a-behavioural-and-electrophysiological-investigation-of-the-effect-of-bilingualism-on-aging-and-cognitive-control
#17
Shanna Kousaie, Natalie A Phillips
Given previous, but inconsistent, findings of language group differences on cognitive control tasks the current investigation examined whether such differences could be demonstrated in a sample of older bilingual adults. Monolingual and bilingual older adults performed three cognitive control tasks that have previously been used in the literature (i.e., Stroop, Simon and flanker tasks) while brain electrophysiological recordings took place. Both behavioural (response time and accuracy) and event-related brain potentials (ERPs; N2 and P3 amplitude and latency) were compared across the two language groups...
November 20, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27872798/factors-affecting-executive-functions-in-obstructive-sleep-apnea-syndrome-and-volumetric-changes-in-the-prefrontal-cortex
#18
Zahide Yılmaz, Nuray Voyvoda, Eda İnan, Pınar Bekdik Şirinocak, Rabia Terzi
PURPOSE: Obstructive sleep apnea syndrome (OSAS) is associated with cognitive changes and executive functions are among the cognitive domains most affected. However, it is not completely understood which of the factor(s) among hypoxemia, repeated arousal, and sleepiness affect the executive functions. This study aims to evaluate the possible relationship between the executive functions and nocturnal parameters, Epworth Sleepiness Scale (ESS) scores, and prefrontal cortex (PFC) volumes...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27866346/comparing-the-effects-of-an-acute-bout-of-physical-exercise-with-an-acute-bout-of-interactive-mental-and-physical-exercise-on-electrophysiology-and-executive-functioning-in-younger-and-older-adults
#19
Julia Dimitrova, Michael Hogan, Patrick Khader, Denis O'Hora, Liam Kilmartin, Jane C Walsh, Richard Roche, Cay Anderson-Hanley
BACKGROUND: Physical exercise has been shown to improve cognitive and neural functioning in older adults. AIMS AND METHODS: The current study compared the effects of an acute bout of physical exercise with a bout of interactive mental and physical exercise (i.e., "exergaming") on executive (Stroop) task performance and event-related potential (ERP) amplitudes in younger and older adults. RESULTS: Results revealed enhanced executive task performance in younger and older adults after exercise, with no differences in performance between exercise conditions...
November 19, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27863855/erratum-to-intra-individual-changes-in-stroop-related-activations-linked-to-cigarette-abstinence-in-adolescent-tobacco-smokers-preliminary-findings-drug-alcohol-depend-167-2016-182-189
#20
Sarah W Yip, Iris M Balodis, Kathleen M Carroll, Suchitra Krishnan-Sarin, Marc N Potenza
No abstract text is available yet for this article.
December 1, 2016: Drug and Alcohol Dependence
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