Advertisement

Topics

PubMed Journals Articles About "Model Captures Flexibility Working Memory" RSS

10:06 EDT 20th June 2019 | BioPortfolio

Model Captures Flexibility Working Memory PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Model Captures Flexibility Working Memory articles that have been published worldwide.

More Information about "Model Captures Flexibility Working Memory" on BioPortfolio

We have published hundreds of Model Captures Flexibility Working Memory news stories on BioPortfolio along with dozens of Model Captures Flexibility Working Memory Clinical Trials and PubMed Articles about Model Captures Flexibility Working Memory for you to read. In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Model Captures Flexibility Working Memory Companies in our database. You can also find out about relevant Model Captures Flexibility Working Memory Drugs and Medications on this site too.

Showing "model captures flexibility working memory" PubMed Articles 1–25 of 22,000+

Impairment of cognitive flexibility in type 2 diabetic db/db mice.

Impaired executive function is a major peril for patients with type 2 diabetes, reducing quality of life and ability for diabetes management. Despite the significance of this impairment, few animal models of type 2 diabetes examine domains of executive function such as cognitive flexibility or working memory. Here, we evaluated these executive function domains in db/db mice, an established model of type 2 diabetes, at 10 and 24 weeks of age. The db/db mice showed impaired cognitive flexibility in the Morris...


Gray Matter Microstructural Abnormalities and Working Memory Deficits in Individuals with Schizophrenia.

Working memory impairments serve as prognostic factors for patients with schizophrenia. Working memory deficits are mainly associated with gray matter (GM) thickness and volume. We investigated the association between GM diffusivity and working memory in controls and individuals with schizophrenia.

Impairment in planning tasks of children and adolescents with anxiety disorders.

Anxiety disorders are associated with poor neuropsychological performance in attention and memory. However, little is known about the impact of these difficulties on other cognitive functions, such as planning. The ability to plan, including attention, working memory and set-shifting components, can be assessed by the Tower of Hanoi task (ToH). This study evaluated seventy-one participants, aged from 7-17 years. Thirty-seven subjects met DSM-IV diagnostic criteria for at least one anxiety disorder and 34 in...


How the Motor System Integrates with Working Memory.

Working memory is vital for basic functions in everyday life. During working memory, one holds a finite amount of information in mind until it is no longer required or when resources to maintain this information are depleted. Convergence of neuroimaging data indicates that working memory is supported by the motor system, and in particular, by regions that are involved in motor planning and preparation, in the absence of overt movement. These "secondary motor" regions are physically located between primary m...

An Integrated Working Memory Model for Time-Based Resource-Sharing.

The time-based resource-sharing (TBRS) model envisions working memory as a rapidly switching, serial, attentional refreshing mechanism. Executive attention trades its time between rebuilding decaying memory traces and processing extraneous activity. To thoroughly investigate the implications of the TBRS theory, we integrated TBRS within the ACT-R cognitive architecture, which allowed us to test the TBRS model against both participant accuracy and response time data in a dual task environment. In the current...

Affective Working Memory: An Integrative Psychological Construct.

When people ruminate about an unfortunate encounter with a loved one, savor a long-sought accomplishment, or hold in mind feelings from a marvelous or regretfully tragic moment, what mental processes orchestrate these psychological phenomena? Such experiences typify how affect interacts with working memory, which we posit can occur in three primary ways: emotional experiences can modulate working memory, working memory can modulate emotional experiences, and feelings can be the mental representations mainta...

Working memory capacity is enhanced by distributed prefrontal activation and invariant temporal dynamics.

The amount of information that can be stored in working memory is limited but may be improved with practice. The basis of improved efficiency at the level of neural activity is unknown. To investigate this question, we trained monkeys to perform a working memory task that required memory for multiple stimuli. Performance decreased as a function of number of stimuli to be remembered, but improved as the animals practiced the task. Neuronal recordings acquired during this training revealed two hitherto unknow...

Transcranial direct current stimulation over the right and left VLPFC leads to differential effects on working and episodic memory.

Previous research suggests that the left VLPFC is involved in working memory, whereas right VLPFC is involved with subsequent episodic memory. High-Definition Transcranial Direct Current Stimulation (HD-tDCS) was used to test whether excitation of the left or right VLPFC would show differential effects of negative and neutral stimuli on working memory and episodic memory tasks. While receiving HD-tDCS over the left or right VLPFC or sham stimulation, participants completed a working memory task with negativ...

Retrogenetic models of working memory: Preliminary multi-group analysis.

The aim of the present study was the qualitative comparison of working memory capacity of young children and older adults through the investigation of the latent structure stability or change in Working Memory capacity (WM) in childhood and aging, using Multiple Group Confirmatory Factor Analysis (MGCFA).

Cerebellum and Cognition: Does the Rodent Cerebellum Participate in Cognitive Functions?

There is a widespread, nearly complete consensus that the human and non-human primate cerebellum is engaged in non-motor, cognitive functions. This body of research has implicated the lateral portions of lobule VII (Crus I and Crus II) and the ventrolateral dentate nucleus. With rodents, however, it is not so clear. We review here approximately 40 years of experiments using a variety of cerebellar manipulations in rats and mice and measuring the effects on executive functions (working memory, inhibition, an...

Monkey Memory: Rehearsal Emerges for Novel Images When Familiarity Cues Fade.

It was thought that, when monkeys use familiarity cues to aid recognition memory, they do not engage working memory. A new study shows that, when the value of those familiarity cues is attenuated, monkeys rehearse novel images like familiar ones, a striking parallel with human working memory.

Experimental design modulates variance in BOLD activation: The variance design general linear model.

Typical fMRI studies have focused on either the mean trend in the blood-oxygen-level-dependent (BOLD) time course or functional connectivity (FC). However, other statistics of the neuroimaging data may contain important information. Despite studies showing links between the variance in the BOLD time series (BV) and age and cognitive performance, a formal framework for testing these effects has not yet been developed. We introduce the variance design general linear model (VDGLM), a novel framework that facil...

Enhancing effects of acute exposure to cannabis smoke on working memory performance.

Numerous preclinical studies show that acute cannabinoid administration impairs cognitive performance. Almost all of this research has employed cannabinoid injections, however, whereas smoking is the preferred route of cannabis administration in humans. The goal of these experiments was to systematically determine how acute exposure to cannabis smoke affects working memory performance in a rat model. Adult male (n = 15) and female (n = 16) Long-Evans rats were trained in a food-motivated delayed response wo...

Comparing Effects of Reward Anticipation on Working Memory in Younger and Older Adults.

Goal-directed behavior requires sufficient resource allocation of cognitive control processes, such as the ability to prioritize relevant over less relevant information in working memory. Findings from neural recordings in animals and human multimodal imaging studies suggest that reward incentive mechanisms could facilitate the encoding and updating of context representations, which can have beneficial effects on working memory performance in young adults. In order to investigate whether these performance e...

Oscillations in working memory and neural binding: A mechanism for multiple memories and their interactions.

Neural oscillations have been recorded and implicated in many different basic brain and cognitive processes. For example, oscillatory neural activity has been suggested to play a role in binding and in the maintenance of information in working memory. With respect to the latter, the majority of work has focused primarily on oscillations in terms of providing a "code" in working memory. However, oscillations may additionally play a fundamental role by enabling or facilitating essential properties and behavio...

Improving working memory and pain inhibition in older persons using transcranial direct current stimulation.

The aim of the present study was to examine whether transcranial Direct Current Stimulation (tDCS) could enhance working memory and pain inhibition in older persons. Fifteen volunteers (7 women, 8 men; mean ± SD: 64 ± 4.4 y.o.) participated in two tDCS sessions during which an n-back task was performed with two levels of working memory load, while painful stimulation was delivered at the ankle. The experiment included five within-subject counterbalanced conditions (pain alone and 0-back or 2-back ...

Existence of working memory in teleosts: establishment of the delayed matching-to-sample task in adult zebrafish.

Operant conditioning is a powerful tool to study animal perception and cognition. Compared to mammals and birds, there are very few behavioral studies using operant conditioning paradigm in teleosts. Here we aim to establish matching-to-sample task (MTS) in adult zebrafish, using visual cues (colors) as discriminative stimuli. Unlike simple one-to-one color-reward association learning, MTS requires ability for context integration. In this study, zebrafish learned to perform the simultaneous-matching-to-samp...

The neural correlations of spatial attention and working memory deficits in adults with ADHD.

Working memory impairment is a typical cognitive abnormality in patients with attention-deficit/hyperactivity disorder (ADHD) and is closely related to attention. Exploring the interaction between working memory and attention in patients with ADHD is of great significance for studying the pathological mechanism of this disease. In this study, electrophysiological markers of attention, posterior contralateral N2 (N2pc), and working memory, contralateral delay activity (CDA), were used to explore the relation...

Working Memory Profiles of Children With Dyslexia, Developmental Language Disorder, or Both.

Purpose Compared to children with typical development, children with dyslexia, developmental language disorder (DLD), or both often demonstrate working memory deficits. It is unclear how pervasive the deficits are or whether the deficits align with diagnostic category. The purpose of this study was to determine whether different working memory profiles would emerge on a comprehensive battery of central executive, phonological, visuospatial, and binding working memory tasks and whether these profiles were as...

Joint attention is intact even when visuospatial working memory is occupied.

The gaze of another modulates and shifts an observer's spatial attention toward this gaze direction. This phenomenon is termed joint attention. Although previous studies found joint attention was induced during a spatial working memory task, it remains an open question whether spatial working memory interferes with joint attention. To address this question, we conducted a dual task paradigm consisting of gaze cuing and spatial working memory tasks. The gaze cuing task requires that participants respond to t...

Motor ability and working memory in Omani and German primary school-aged children.

This study investigated the motor ability and working memory performance of Omani and German primary school-aged children. One hundred eighty-five children from public schools participated in a gross motor test that integrated whole body coordination, three different ball tasks, and a 20-meter run. Furthermore, they completed four working memory tests (the Digit-Span Test forward and backwards and the Corsi Block-Tapping Test forward and backwards). Two MANOVAS with the different motor and working memory te...

The interdependence of attention, working memory and gaze control: behavior and neural circuitry.

Visual attention, visual working memory, and gaze control are basic functions that all select a subset of visual input to guide immediate or subsequent behavior. In this review, we focus on the relationship between these three functions and describe evidence, both at the behavioral and neural circuit levels that they are heavily interdependent. We start with the demonstration that gaze control - or saccade preparation in particular - leads to spatial attention. Next, we show that spatial attention and worki...

Resolving Age-Related Differences in Working Memory: Equating Perception and Attention Makes Older Adults Remember as Well as Younger Adults.

Older adults show clear deficits in working memory functioning. Here, we investigate the often-reported decline in focus switching, that is, the ability to shift items from the focus of attention into working memory, and back. Specifically, we examined whether equating subjects on early processing (perception and attention) might ameliorate the deficit.

Effects of Early Auditory Deprivation on Working Memory and Reasoning Abilities in Verbal and Visuospatial Domains for Pediatric Cochlear Implant Recipients.

The overall goal of this study was to compare verbal and visuospatial working memory in children with normal hearing (NH) and with cochlear implants (CI). The main questions addressed by this study were (1) Does auditory deprivation result in global or domain-specific deficits in working memory in children with CIs compared with their NH age mates? (2) Does the potential for verbal recoding affect performance on measures of reasoning ability in children with CIs relative to their NH age mates? and (3) Is pe...

Effects of Reverberation on the Relation Between Compression Speed and Working Memory for Speech-in-Noise Perception.

Previous study has suggested that when listening in modulated noise, individuals benefit from different wide dynamic range compression (WDRC) speeds depending on their working memory ability. Reverberation reduces the modulation depth of signals and may impact the relation between WDRC speed and working memory. The purpose of this study was to examine this relation across a range of reverberant conditions.


Advertisement
Quick Search
Advertisement
Advertisement