keyword
MENU ▼
Read by QxMD icon Read
search

N-back

keyword
https://www.readbyqxmd.com/read/29124791/impact-of-different-intensities-of-intermittent-theta-burst-stimulation-on-the-cortical-properties-during-tms-eeg-and-working-memory-performance
#1
Sung Wook Chung, Nigel C Rogasch, Kate E Hoy, Caley M Sullivan, Robin F H Cash, Paul B Fitzgerald
Intermittent theta burst stimulation (iTBS) is a noninvasive brain stimulation technique capable of increasing cortical excitability beyond the stimulation period. Due to the rapid induction of modulatory effects, prefrontal application of iTBS is gaining popularity as a therapeutic tool for psychiatric disorders such as depression. In an attempt to increase efficacy, higher than conventional intensities are currently being applied. The assumption that this increases neuromodulatory may be mechanistically false for iTBS...
November 9, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29122195/how-we-can-measure-the-non-driving-task-engagement-in-automated-driving-comparing-flow-experience-and-workload
#2
Sang Min Ko, Yong Gu Ji
In automated driving, a driver can completely concentrate on non-driving-related tasks (NDRTs). This study investigated the flow experience of a driver who concentrated on NDRTs and tasks that induce mental workload under conditional automation. Participants performed NDRTs under different demand levels: a balanced demand-skill level (fit condition) to induce flow, low-demand level to induce boredom, and high-demand level to induce anxiety. In addition, they performed the additional N-Back task, which artificially induces mental workload...
February 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29103528/a-randomised-controlled-trial-investigating-the-benefits-of-adaptive-working-memory-training-for-working-memory-capacity-and-attentional-control-in-high-worriers
#3
Matthew Hotton, Nazanin Derakshan, Elaine Fox
The process of worry has been associated with reductions in working memory capacity and availability of resources necessary for efficient attentional control. This, in turn, can lead to escalating worry. Recent investigations into working memory training have shown improvements in attentional control and cognitive performance in high trait-anxious individuals and individuals with sub-clinical depression. The current randomised controlled trial investigated the effects of 15 days of adaptive n-back working memory training, or an active control task, on working memory capacity, attentional control and worry in a sample of high worriers...
November 3, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/29071355/extent-of-dorsolateral-prefrontal-cortex-plasticity-and-its-association-with-working-memory-in-patients-with-alzheimer-disease
#4
Sanjeev Kumar, Reza Zomorrodi, Zaid Ghazala, Michelle S Goodman, Daniel M Blumberger, Amay Cheam, Corinne Fischer, Zafiris J Daskalakis, Benoit H Mulsant, Bruce G Pollock, Tarek K Rajji
Importance: The extent of dorsolateral prefrontal cortex (DLPFC) plasticity in Alzheimer disease (AD) and its association with working memory are not known. Objectives: To determine whether participants with AD had impaired DLPFC plasticity compared with healthy control participants, to compare working memory between participants with AD and controls, and to determine whether DLPFC plasticity was associated with working memory. Design, Setting, and Participants: This cross-sectional study included 32 participants with AD who were 65 years or older and met diagnostic criteria for dementia due to probable AD with a score of at least 17 on the Mini-Mental State Examination and 16 age-matched control participants...
October 25, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29066964/using-functional-near-infrared-spectroscopy-to-measure-effects-of-delta-9-tetrahydrocannabinol-on-prefrontal-activity-and-working-memory-in-cannabis-users
#5
Hasan O Keles, Milena Radoman, Gladys N Pachas, A Eden Evins, Jodi M Gilman
Intoxication from cannabis impairs cognitive performance, in part due to the effects of Δ9-tetrahydrocannabinol (THC, the primary psychoactive compound in cannabis) on prefrontal cortex (PFC) function. However, a relationship between impairment in cognitive functioning with THC administration and THC-induced change in hemodynamic response has not been demonstrated. We explored the feasibility of using functional near-infrared spectroscopy (fNIRS) to examine the functional changes of the human PFC associated with cannabis intoxication and cognitive impairment...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29066787/nitrogen-recycling-at-the-costa-rican-subduction-zone-the-role-of-incoming-plate-structure
#6
Hyunwoo Lee, Tobias P Fischer, J Maarten de Moor, Zachary D Sharp, Naoto Takahata, Yuji Sano
Efficient recycling of subducted sedimentary nitrogen (N) back to the atmosphere through arc volcanism has been advocated for the Central America margin while at other locations mass balance considerations and N contents of high pressure metamorphic rocks imply massive addition of subducted N to the mantle and past the zones of arc magma generation. Here, we report new results of N isotope compositions with gas chemistry and noble gas compositions of forearc and arc front springs in Costa Rica to show that the structure of the incoming plate has a profound effect on the extent of N subduction into the mantle...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29054259/enhancing-performance-of-p300-speller-under-mental-workload-by-incorporating-dual-task-data-during-classifier-training
#7
Yuqian Chen, Yufeng Ke, Guifang Meng, Jin Jiang, Hongzhi Qi, Xuejun Jiao, Minpeng Xu, Peng Zhou, Feng He, Dong Ming
As one of the most important brain-computer interface (BCI) paradigms, P300-Speller was shown to be significantly impaired once applied in practical situations due to effects of mental workload. This study aims to provide a new method of building training models to enhance performance of P300-Speller under mental workload. Three experiment conditions based on row-column P300-Speller paradigm were performed including speller-only, 3-back-speller and mental-arithmetic-speller. Data under dual-task conditions were introduced to speller-only data respectively to build new training models...
December 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29050384/stimulating-thought-a-functional-mri-study-of-transcranial-direct-current-stimulation-in-schizophrenia
#8
RANDOMIZED CONTROLLED TRIAL
Natasza D Orlov, Owen O'Daly, Derek K Tracy, Yusuf Daniju, John Hodsoll, Lorena Valdearenas, John Rothwell, Sukhi S Shergill
Individuals with schizophrenia typically suffer a range of cognitive deficits, including prominent deficits in working memory and executive function. These difficulties are strongly predictive of functional outcomes, but there is a paucity of effective therapeutic interventions targeting these deficits. Transcranial direct current stimulation is a novel neuromodulatory technique with emerging evidence of potential pro-cognitive effects; however, there is limited understanding of its mechanism. This was a double-blind randomized sham controlled pilot study of transcranial direct current stimulation on a working memory (n-back) and executive function (Stroop) task in 28 individuals with schizophrenia using functional magnetic resonance imaging...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29032015/possible-positive-effect-of-the-apoe-%C3%AE%C2%B52-allele-on-cognition-in-early-to-mid-adult-life
#9
Lindsey I Sinclair, Christopher W Pleydell-Pearce, Ian N M Day
BACKGROUND: ε4 allele possession is associated with an increased risk of Alzheimer's disease. Its effects earlier in life are less well understood. Previous studies have reported both detrimental effects and a lack of effect on cognition outside dementia. We used genotype based recall from the ALSPAC study to investigate whether APOE genotype influences cognition in earlier adult life. METHODS: We invited all individuals with the rarer ε22 or ε44 genotypes and equal numbers of those with ε32, ε33 or ε34 APOE genotypes (total n invited = 1936, ages 23-67)...
October 12, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29023364/feature-weight-driven-interactive-mutual-information-modeling-for-heterogeneous-bio-signal-fusion-to-estimate-mental-workload
#10
Pengbo Zhang, Xue Wang, Junfeng Chen, Wei You
Many people suffer from high mental workload which may threaten human health and cause serious accidents. Mental workload estimation is especially important for particular people such as pilots, soldiers, crew and surgeons to guarantee the safety and security. Different physiological signals have been used to estimate mental workload based on the n-back task which is capable of inducing different mental workload levels. This paper explores a feature weight driven signal fusion method and proposes interactive mutual information modeling (IMIM) to increase the mental workload classification accuracy...
October 12, 2017: Sensors
https://www.readbyqxmd.com/read/29017430/characterizing-neurocognitive-late-effects-in-childhood-leukemia-survivors-using-a-combination-of-neuropsychological-and-cognitive-neuroscience-measures
#11
Ellen Van Der Plas, Lauren Erdman, Brian J Nieman, Rosanna Weksberg, Darci T Butcher, Deborah L O'connor, Susanne Aufreiter, Johann Hitzler, Sharon L Guger, Russell J Schachar, Shinya Ito, Brenda J Spiegler
Knowledge about cognitive late effects in survivors of childhood acute lymphoblastic leukemia (ALL) is largely based on standardized neuropsychological measures and parent reports. To examine whether cognitive neuroscience paradigms provided additional insights into neurocognitive and behavioral late effects in ALL survivors, we assessed cognition and behavior using a selection of cognitive neuroscience tasks and standardized measures probing domains previously demonstrated to be affected by chemotherapy. 130 ALL survivors and 158 control subjects, between 8 and 18 years old at time of testing, completed the n-back (working memory) and stop-signal (response inhibition) tasks...
October 10, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28976406/disrupted-executive-function-and-aggression-in-individuals-with-a-history-of-adverse-childhood-experiences-an-event-related-potential-study
#12
Jiao-Mei Xue, Ping-Zhen Lin, Ji-Wei Sun, Feng-Lin Cao
Here, we explored the functional and neural mechanisms underlying aggression related to adverse childhood experiences. We assessed behavioral performance and event-related potentials during a go/no-go and N-back paradigm. The participants were 15 individuals with adverse childhood experiences and high aggression (ACE + HA), 13 individuals with high aggression (HA), and 14 individuals with low aggression and no adverse childhood experiences (control group). The P2 latency (initial perceptual processing) was longer in the ACE + HA group for the go trials...
October 2, 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/28971466/the-effects-of-anodal-transcranial-direct-current-stimulation-on-working-memory
#13
Marianna Katsoulaki, Alexandros Kastrinis, Maria Tsekoura
The aim of this paper was to review the effects of anodal transcranial direct current stimulation (tdcs) on working memory in healthy population. Ten studies were identified involving 319 subjects. Working memory performance was measured using cognitive tasks such as the n-back task, digit span forward or digit span backwards test, Sternberg WM task, the Pacet Auditory Serial Addition Task (PASAT) and the Pacet Auditory Serial Subtraction Task (PASST), verbal and visuospatial tasks and the Operation Span (OSpan) task...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28959200/open-and-closed-skill-exercise-interventions-produce-different-neurocognitive-effects-on-executive-functions-in-the-elderly-a-6-month-randomized-controlled-trial
#14
Chia-Liang Tsai, Chien-Yu Pan, Fu-Chen Chen, Yu-Ting Tseng
This study aimed to explore the effects of open- and closed-skill exercise interventions on the neurocognitive performance of executive functions in the elderly. Sixty-four healthy elderly males were randomly assigned to either a closed-skill (bike riding or brisk walking/jogging, n = 22), open-skill (table tennis, n = 21), or control (n = 21) group. Various neuropsychological [e.g., accuracy rates (AR) and reaction time (RT)] and electrophysiological [e.g., event-related potential (ERP) P3 component] measures were assessed during a variant of the task-switching paradigm, as well as an N-back task at baseline and after either a 6-month exercise intervention or control period...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28955282/number-line-estimation-predicts-mathematical-skills-difference-in-grades-2-and-4
#15
Meixia Zhu, Dan Cai, Ada W S Leung
Studies have shown that number line estimation is important for learning. However, it is yet unclear if number line estimation predicts different mathematical skills in different grades after controlling for age, non-verbal cognitive ability, attention, and working memory. The purpose of this study was to examine the role of number line estimation on two mathematical skills (calculation fluency and math problem-solving) in grade 2 and grade 4. One hundred and forty-eight children from Shanghai, China were assessed on measures of number line estimation, non-verbal cognitive ability (non-verbal matrices), working memory (N-back), attention (expressive attention), and mathematical skills (calculation fluency and math problem-solving)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28940848/executive-function-and-functional-and-structural-brain-differences-in-middle-age-adults-with-autism-spectrum-disorder
#16
B Blair Braden, Christopher J Smith, Amiee Thompson, Tyler K Glaspy, Emily Wood, Divya Vatsa, Angela E Abbott, Samuel C McGee, Leslie C Baxter
There is a rapidly growing group of aging adults with autism spectrum disorder (ASD) who may have unique needs, yet cognitive and brain function in older adults with ASD is understudied. We combined functional and structural neuroimaging and neuropsychological tests to examine differences between middle-aged men with ASD and matched neurotypical (NT) men. Participants (ASD, n = 16; NT, n = 17) aged 40-64 years were well-matched according to age, IQ (range: 83-131), and education (range: 9-20 years)...
September 21, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28938852/transcranial-direct-current-stimulation-improves-executive-dysfunctions-in-adhd-implications-for-inhibitory-control-interference-control-working-memory-and-cognitive-flexibility
#17
Vahid Nejati, Mohammad Ali Salehinejad, Michael A Nitsche, Asal Najian, Amir-Homayoun Javadi
OBJECTIVE: This study examined effects of transcranial direct current stimulation (tDCS) over the dorsolateral prefrontal cortex (DLPFC) and orbitofrontal cortex (OFC) on major executive functions (EFs), including response inhibition, executive control, working memory (WM), and cognitive flexibility/task switching in ADHD. METHOD: ADHD children received (a) left anodal/right cathodal DLPFC tDCS and (b) sham stimulation in Experiment 1 and (a) left anodal DLPFC/right cathodal OFC tDCS, (b) left cathodal DLPFC/right anodal OFC tDCS, and (c) sham stimulation in Experiment 2...
September 1, 2017: Journal of Attention Disorders
https://www.readbyqxmd.com/read/28929242/impaired-working-memory-updating-affects-memory-for-emotional-and-non-emotional-materials-the-same-way-evidence-from-post-traumatic-stress-disorder-ptsd
#18
Vahid Nejati, Mohammad Ali Salehinejad, Azam Sabayee
Due to the limited capacity of working memory (WM), efficient suppression of no longer relevant memory contents (inhibition) and revising the current contents of the memory (updating) are crucial factors in memorizing. However, not every individual is able to do so; among them are post-traumatic stress disorder (PTSD) patients who seem to have trouble forgetting trauma-related materials, making their memory overloaded with irrelevant information. The present study assumes that the inability to forget in PTSD patients is due to the impaired updating function of WM and, therefore, suggests that these individuals have inferior WM function for both emotional and unemotional materials...
September 19, 2017: Cognitive Processing
https://www.readbyqxmd.com/read/28928644/near-infrared-spectroscopy-based-frontal-lobe-neurofeedback-integrated-in-virtual-reality-modulates-brain-and-behavior-in-highly-impulsive-adults
#19
Justin Hudak, Friederike Blume, Thomas Dresler, Florian B Haeussinger, Tobias J Renner, Andreas J Fallgatter, Caterina Gawrilow, Ann-Christine Ehlis
Based on neurofeedback (NF) training as a neurocognitive treatment in attention-deficit/hyperactivity disorder (ADHD), we designed a randomized, controlled functional near-infrared spectroscopy (fNIRS) NF intervention embedded in an immersive virtual reality classroom in which participants learned to control overhead lighting with their dorsolateral prefrontal brain activation. We tested the efficacy of the intervention on healthy adults displaying high impulsivity as a sub-clinical population sharing common features with ADHD...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28922999/pattern-of-near-transfer-effects-following-working-memory-training-with-a-dual-n-back-task
#20
Anna Soveri, Eric P A Karlsson, Otto Waris, Petra Grönholm-Nyman, Matti Laine
In a randomized controlled trial, we investigated the pattern of near transfer effects of working memory (WM) training with an adaptive auditory-visuospatial dual n-back training task in healthy young adults. The results revealed significant task-specific transfer to an untrained single n-back task, and more general near transfer to a WM updating composite score plus a nearly significant effect on a composite score measuring interference control in WM. No transfer effects were seen on Active or Passive WM composites...
July 2017: Experimental Psychology
keyword
keyword
71744
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"