A Robust Model of Gated Working Memory.

07:00 EST 8th November 2019 | BioPortfolio

Summary of "A Robust Model of Gated Working Memory."

Gated working memory is defined as the capacity of holding arbitrary information at any time in order to be used at a later time. Based on electrophysiological recordings, several computational models have tackled the problem using dedicated and explicit mechanisms. We propose instead to consider an implicit mechanism based on a random recurrent neural network. We introduce a robust yet simple reservoir model of gated working memory with instantaneous updates. The model is able to store an arbitrary real value at random time over an extended period of time. The dynamics of the model is a line attractor that learns to exploit reentry and a nonlinearity during the training phase using only a few representative values. A deeper study of the model shows that there is actually a large range of hyperparameters for which the results hold (e.g., number of neurons, sparsity, global weight scaling) such that any large enough population, mixing excitatory and inhibitory neurons, can quickly learn to realize such gated working memory. In a nutshell, with a minimal set of hypotheses, we show that we can have a robust model of working memory. This suggests this property could be an implicit property of any random population, that can be acquired through learning. Furthermore, considering working memory to be a physically open but functionally closed system, we give account on some counterintuitive electrophysiological recordings.


Journal Details

This article was published in the following journal.

Name: Neural computation
ISSN: 1530-888X
Pages: 1-29


DeepDyve research library

PubMed Articles [15064 Associated PubMed Articles listed on BioPortfolio]

Working Memory: Flexible but Finite.

There are inherent trade-offs between the flexibility and the capacity of working memory, or the ability to temporarily hold information "in mind." In a recent issue of Neuron, Bouchacourt and Buschma...

Time-Gated Word Recognition in Children: Effects of Auditory Access, Age, and Semantic Context.

Purpose We employed a time-gated word recognition task to investigate how children who are hard of hearing (CHH) and children with normal hearing (CNH) combine cognitive-linguistic abilities and acous...

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 ...

Reviewing working memory training gains in healthy older adults: A meta-analytic review of transfer for cognitive outcomes.

The objective of this meta-analytic review was to systematically assess the effects of working memory training on healthy older adults. We identified 552 entries, of which 27 experiments met our inclu...

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 ...

Clinical Trials [4625 Associated Clinical Trials listed on BioPortfolio]

Gestural Short Term and Working Memory Task

According to the working memory model, which accounts for the organisation of working memory, the processing of non-meaningful gestures is not clear. Some authors suggest that working memo...

Development of a Model-based Working Memory Training and Investigation of Its Comparative Efficacy

This study is to investigate the efficacy of model-based Working Memory (WM) training using an appropriate control condition. The interventions are a model-based, a single-task and a multi...

Pilot Study of the Feasibility and Efficacy of Working Memory Training in Children With Cochlear Implants

This study is an investigation of the effect of a computer-based working memory training program on memory and language processing in at-risk children (e.g., those with working memory weak...

Working Memory Training in Young ADHD Children

The purpose of this study is to investigate whether working memory training improves behavioral symptoms, neurocognitive performance, and neural functioning in young children with ADHD.

A Novel fNIRS Neurofeedback Intervention for Enhancement of Working Memory in Attention Deficit Hyperactivity Disorder (ADHD)

The proposed study is to test and validate a novel intervention that integrates computerized cognitive training with real-time neuromonitoring and neurofeedback to enhance working memory b...

Medical and Biotech [MESH] Definitions

Type of declarative memory, consisting of personal memory in contrast to general knowledge.

Method of isolation and maintenance of a working heart for various cardiac measurements. The model allows for the separation of cardiac and systemic variables in the denervated heart.

Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.

People who are in the labor force either working or looking for work for 27 weeks or more in a year, but whose income fall below a given poverty line.

A neuropsychological test designed to assess different memory functions. It may incorporate an optional cognitive exam (Brief Cognitive Status Exam) that helps to assess memory related cognitive function.

Quick Search

DeepDyve research library

Searches Linking to this Article