Advertisement

Topics

PubMed Journals Articles About "Working Memory Stored Along Logarithmic Timeline Converging Evidence" RSS

09:47 EST 15th December 2018 | BioPortfolio

Working Memory Stored Along Logarithmic Timeline Converging Evidence PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Working Memory Stored Along Logarithmic Timeline Converging Evidence articles that have been published worldwide.

More Information about "Working Memory Stored Along Logarithmic Timeline Converging Evidence" on BioPortfolio

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

Showing "working memory stored along logarithmic timeline Converging evidence" PubMed Articles 1–25 of 16,000+

Dynamic population coding and its relationship to working memory.

For over 45 years, neuroscientists have conducted experiments aimed at understanding the neural basis of working memory. Early results examining individual neurons highlighted that information is stored in working memory in persistent sustained activity where neurons maintained elevated firing rates over extended periods of time. However, more recent work has emphasized that information is often stored in working memory in dynamic population codes, where different neurons contain information at different pe...


Failure of self-consistency in the discrete resource model of visual working memory.

The discrete resource model of working memory proposes that each individual has a fixed upper limit on the number of items they can store at one time,due to division of memory into a few independent "slots". According to this model, responses on short-term memory tasks consist of a mixture of noisy recall (when the tested item is in memory) and random guessing (when the item is not in memory). This provides two opportunities to estimate capacity for each observer: first, based on their frequency of random g...

Verbal working memory modulates afferent circuits in motor cortex.

Verbal instruction and strategies informed by declarative memory are key to performance and acquisition of skilled actions. We previously demonstrated that anatomically distinct sensory-motor inputs converging on the corticospinal neurons of motor cortex are differentially sensitive to visual attention load. However, how loading of working memory shapes afferent input to motor cortex is unknown. The present study used short-latency afferent inhibition (SAI) to probe the effect of verbal working memory upon ...


Olfactory modulation of colour working memory: How does citrus-like smell influence the memory of orange colour?

Olfactory modulation of vision is not well understood whereas visual modulation of olfaction has been more fully investigated. This study aimed to reveal in a simple manner whether there is olfactory modulation of colour working memory using an odour that induces a citrus-like smell and is associated with orange colours. We assumed that the odour would have modulatory effects on the colour information stored in working memory. To clarify whether these effects are supportive or disruptive, during the colour ...

Space and time in episodic memory: Effects of linearity and directionality on memory for spatial location and temporal order in children and adults.

Episodic memory is a critical capacity that involves remembering past events along with their spatial and temporal contexts. Relatively little is known about the relations between spatial and temporal information in long-term memory in children or adults. The present research examined the influence of the mental timeline (linear horizontal display extending from the left to right direction for English speakers) on memory for events and their spatial and temporal features in 7-year-olds, 9-year-olds, 11-year...

A Forensic Exploration of the Microsoft Windows 10 Timeline.

The Microsoft Windows operating system continues to dominate the desktop computing market. With such high levels of usage comes an inferred likelihood of digital forensic practitioners encountering this platform during their investigations. As part of any forensic examination of a digital device, operating system artifacts, which support the identification and understanding of how a user has behaved on their system provide a potential source of evidence. Now, following Microsoft's April 2018 build 1803 rele...

Alterations in cortical interneurons and cognitive function in schizophrenia.

Certain clinical features of schizophrenia, such as working memory disturbances, appear to emerge from altered gamma oscillatory activity in the prefrontal cortex (PFC). Given the essential role of GABA neurotransmission in both working memory and gamma oscillations, understanding the cellular substrate for their disturbances in schizophrenia requires evidence from in vivo neuroimaging studies, which provide a means to link markers of GABA neurotransmission to gamma oscillations and working memory, and from...

Effects of Parkinson's disease and dopamine on digit span measures of working memory.

Parkinson's disease (PD) impairs working memory (WM)-the ability to maintain items in memory for short periods of time and manipulate them. There is conflicting evidence on the nature of the deficits caused by the disease, and the potential beneficial and detrimental effects of dopaminergic medication on different WM processes.

Trait anxiety is associated with a decreased visual working memory capacity for faces.

Recent work has suggested that anxiety restricts working memory capacity, which may underlie a wide range of cognitive symptoms in anxiety. However, previous literature on the anxiety-visual working memory association yielded mixed results, with some studies demonstrating an anxiety-related increase in visual working memory capacity. In an attempt to gain a more thorough understanding of the relationship between anxiety and visual working memory maintenance function, the current study examined the influence...

Information Transmission in HPC-PFC Network for Spatial Working Memory in Rat.

Spatial working memory is a short-term system for the temporary holding and manipulation of spatial information. Evidence shows that the hippocampus (HPC) and prefrontal cortex (PFC) play important roles in spatial working memory. Though the communication between HPC and PFC is recognized as essential for successful execution of spatial working memory tasks, the directional information transmission in the HPC-PFC network is largely unclear. Therefore, in the present study, neuronal activity was recorded fro...

Load matters: neural correlates of verbal working memory in children with autism spectrum disorder.

Autism spectrum disorder (ASD) is a pervasive neurodevelopmental disorder characterised by diminished social reciprocity and communication skills and the presence of stereotyped and restricted behaviours. Executive functioning deficits, such as working memory, are associated with core ASD symptoms. Working memory allows for temporary storage and manipulation of information and relies heavily on frontal-parietal networks of the brain. There are few reports on the neural correlates of working memory in youth ...

Training Working Memory in Adolescents Using Serious Game Elements: Pilot Randomized Controlled Trial.

Working memory capacity has been found to be impaired in adolescents with various psychological problems, such as addictive behaviors. Training of working memory capacity can lead to significant behavioral improvements, but it is usually long and tedious, taxing participants' motivation to train.

Hemispheric asymmetries in EEG alpha oscillations indicate active inhibition during attentional orienting within working memory.

Working memory contents can be prioritized by retroactively deploying attention within memory. This is broadly interpreted as evidence of a concentration of memory resources to the attended, to-be-remembered stimulus. However, online attentional selection is known to additionally depend on distractor inhibition, raising the viable alternative that attentional deployment in working memory involves inhibitory control processes. Here, we demonstrate that active inhibition plays a central role in the deployment...

Low-frequency direct cortical stimulation of left superior frontal gyrus enhances working memory performance.

The neural substrates of working memory are spread across prefrontal, parietal and cingulate cortices and are thought to be coordinated through low frequency cortical oscillations in the theta (3-8 Hz) and alpha (8-12 Hz) frequency bands. While the functional role of many subregions have been elucidated using neuroimaging studies, the role of superior frontal gyrus (SFG) is not yet clear. Here, we combined electrocorticography and direct cortical stimulation in three patients implanted with subdural ele...

Structuring of Abstract Working Memory Content by Fronto-parietal Synchrony in Primate Cortex.

How is neuronal activity across distant brain regions orchestrated to allow multiple stimuli to be stored together in working memory, yet maintained separate for individual readout and protection from distractors? Using paired recordings in the prefrontal and parietal cortex of monkeys discriminating numbers of items (numerosities), we found that working memory content is structured by frequency-specific oscillatory synchrony. Parieto-frontal signaling in the beta band carried information about the most rec...

Working memory benchmarks-A missed opportunity: Comment on Oberauer et al. (2018).

This commentary addresses a number of problems with the benchmarks proposed for evaluating theories of short-term and working memory (Oberauer et al., 2018). First, it is shown that the proposed benchmarks intentionally exclude findings regarding the core of the working memory construct and also miss some important findings from other subdomains. For these reasons, the benchmarks cannot be considered as a valid representation of the findings on short-term and working memory. Second, it is shown that althoug...

Formation of abstract task representations: Exploring dosage and mechanisms of working memory training effects.

Working memory is strongly involved in human reasoning, abstract thinking and decision making. Past studies have shown that working memory training generalizes to untrained working memory tasks with similar structure (near-transfer effect). Here, we focused on two questions: First, we ask how much training might be required in order to find a reliable near-transfer effect? Second, we ask which choice- mechanism might underlie training benefits? Participants were allocated to one of three groups: working-mem...

Dynamic top-down configuration by the core control system during working memory.

The central executive system (CES) may be the most fundamental yet least understood component of working memory. There is an ongoing debate about which brain regions underlie the top-down regulation of CES during working memory tasks. The neural substrates and regulatory mechanisms of CES remain controversial partly because few previous studies have been focused on comprehensive activation and deactivation joint analysis on all systems involved in all working memory stages, which have shown increasing impor...

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...

The independence of working memory capacity and audiovisual cues when listening in noise.

This study examined the effect of levels of working memory capacity, levels of background noise, and audiovisual cues on adults' ability to process speech when listening in noise. A mixed design was used to examine the effects of signal-to-noise ratio (SNR, 6 levels), audiovisual condition (audio vs. audiovisual), and working memory capacity on speech recognition. Ninety-six participants between the ages of 18 35 without a history of hearing loss or cognitive impairment were recruited for this research proj...

Serial representation of items during working memory maintenance at letter-selective cortical sites.

A key component of working memory is the ability to remember multiple items simultaneously. To understand how the human brain maintains multiple items in memory, we examined direct brain recordings of neural oscillations from neurosurgical patients as they performed a working memory task. We analyzed the data to identify the neural representations of individual memory items by identifying recording sites with broadband gamma activity that varied according to the identity of the letter a subject viewed. Next...

Neurocognitive Profiles of Older Adults with Working-Memory Dysfunction.

Individuals differ in how they perceive, remember, and think. There is evidence for the existence of distinct subgroups that differ in cognitive performance within the older population. However, it is less clear how individual differences in cognition in old age are linked to differences in brain-based measures. We used latent-profile analysis on n-back working-memory (WM) performance to identify subgroups in a large sample of older adults (n = 181; age = 64-68 years). Our analysis identified one larger nor...

Contralateral delay activity does not reflect behavioral feature load in visual working memory.

An ongoing debate in visual working memory research is concentrated on whether visual working memory capacity is determined solely by the number of objects to be memorized, or additionally by the number of relevant features contained within objects. Using a novel change detection task that contained multi-feature objects we examined the effect of both object number and feature number on visual working memory capacity, change detection sensitivity, and posterior slow wave event-related brain potential (ERP) ...

Improvements to visual working memory performance with practice and feedback.

Visual working memory capacity is estimated to be around 3-4 items, but on some trials participants fail to correctly report even a single item from the memory array. Such failures of working memory performance are surprisingly common, and participants have poor self-awareness of them. Previous work has shown that behavioral feedback can reduce the frequency of working memory failures, but the benefits of feedback disappeared immediately after it was taken away. Here, we tested whether extended practice wit...

Stress-induced corticosterone secretion covaries with working memory in aging.

A substantial literature details the relationship between age-related changes to the hypothalamic-pituitary-adrenal axis and deterioration of mnemonic functions that depend on the hippocampus. The relationship between adrenocortical status and other forms of memory that depend on the prefrontal cortex is less well understood in the context of advanced age. Here, we characterized performance of young adult and aged F344 rats on a prefrontal cortex-dependent working memory task and subsequently measured corti...


Advertisement
Quick Search
Advertisement
Advertisement