scholarly journals Very Early Brain Damage Leads to Remodeling of the Working Memory System in Adulthood: A Combined fMRI/Tractography Study

2015 ◽  
Vol 35 (48) ◽  
pp. 15787-15799 ◽  
Author(s):  
S. Froudist-Walsh ◽  
V. Karolis ◽  
C. Caldinelli ◽  
P. J. Brittain ◽  
J. Kroll ◽  
...  
Keyword(s):  
Working Memory ◽  
Brain Damage ◽  
Memory System

Dynamical model of working memory system

2007 ◽  
Vol 58 ◽  
pp. S44
Author(s):  
Vladimir V. Klinshov ◽  
Vladimir I. Nekorkin
Keyword(s):  
Working Memory ◽  
Memory System ◽  
Dynamical Model

Multicomponent Working Memory System with Distributed Executive Control

2020 ◽  
pp. 150-174 ◽  
Author(s):  
André Vandierendonck
Keyword(s):  
Working Memory ◽  
Executive Control ◽  
Memory System ◽  
General Information ◽  
Long Term Memory ◽  
Term Memory ◽  
Episodic Buffer ◽  
Domain Specific ◽  
Current Task

The working memory model with distributed executive control accounts for the interactions between working memory and multi-tasking performance. The working memory system supports planned actions by relying on two capacity-limited domain-general and two time-limited domain-specific modules. Domain-general modules are the episodic buffer and the executive module. The episodic buffer stores multimodal representations and uses attentional refreshment to counteract information loss and to consolidate information in episodic long-term memory. The executive module maintains domain-general information relevant for the current task. The phonological buffer and the visuospatial module are domain specific; the former uses inner speech to maintain and to rehearse phonological information, whereas the latter holds visual and spatial representations active by means of image revival. For its operation, working memory interacts with declarative and procedural long-term memory, gets input from sensory registers, and uses the motor system for output.

When Number Processing and Calculation is Not Your Cup of Tea

2014 ◽  
Author(s):  
Marie-Pascale Noël
Keyword(s):  
Working Memory ◽  
Phonological Awareness ◽  
Brain Damage ◽  
Cognitive Functions ◽  
Developmental Disorders ◽  
Numerical Cognition ◽  
Number Processing ◽  
Cognitive Domains ◽  
Visuospatial Processing ◽  
Shed Light

This section of this volume deals with the study of numerical impairment occurring either after brain damage (i.e., acquired acalculia) or during development without any known brain damage (i.e., dyscalculia). The chapters in this section will report the research aiming at characterizing those difficulties. The study of atypical number processing and calculation in acalculia has contributed importantly to the understanding of how our brain is structured to process number and to calculate. The study of dyscalculia has shed light on the numerical bases for arithmetic learning. This research has also helped us in determining how other cognitive functions such as working memory, visuospatial processing, or phonological awareness have an impact on numerical cognition. These relations between different cognitive domains could partly explain the co-morbidities that are often observed in developmental disorders. Finally, this section also reviews the few attempts that have been made to enhance those numerical capacities.

scholarly journals An fMRI Study of Functional Abnormalities in the Verbal Working Memory System and the Relationship to Clinical Symptoms in Chronic Schizophrenia

2009 ◽  
Vol 20 (1) ◽  
pp. 46-60 ◽  
Author(s):  
Ryu-ichiro Hashimoto ◽  
KangUk Lee ◽  
Alexander Preus ◽  
Robert W. McCarley ◽  
Cynthia G. Wible
Keyword(s):  
Working Memory ◽  
Clinical Symptoms ◽  
Verbal Working Memory ◽  
Chronic Schizophrenia ◽  
Memory System ◽  
Fmri Study ◽  
The Relationship

scholarly journals Right-sided representational neglect after left brain damage in a case without visuospatial working memory deficits

Cortex ◽  
2013 ◽  
Vol 49 (9) ◽  
pp. 2283-2293 ◽  
Author(s):  
Jean-Philippe van Dijck ◽  
Wim Gevers ◽  
Christophe Lafosse ◽  
Wim Fias
Keyword(s):  
Working Memory ◽  
Brain Damage ◽  
Memory Deficits ◽  
Visuospatial Working Memory ◽  
Left Brain ◽  
Left Brain Damage

Processing efficiency of a verbal working memory system is modulated by amphetamine: an fMRI investigation

2005 ◽  
Vol 180 (4) ◽  
pp. 634-643 ◽  
Author(s):  
Christine M. Tipper ◽  
Tara A. Cairo ◽  
Todd S. Woodward ◽  
Anthony G. Phillips ◽  
Peter F. Liddle ◽  
...  
Keyword(s):  
Working Memory ◽  
Verbal Working Memory ◽  
Memory System ◽  
Processing Efficiency

scholarly journals Anterior thalamic nuclei neurons sustain memory

2021 ◽  
Author(s):  
S. C. Barnett ◽  
L.C. Parr-Brownlie ◽  
B. A. L. Perry ◽  
C. K. Young ◽  
H. E. Wicky ◽  
...  
Keyword(s):  
Working Memory ◽  
Electrical Activity ◽  
Spatial Working Memory ◽  
Memory Function ◽  
Memory System ◽  
Mammillary Body ◽  
Thalamic Nuclei ◽  
Anterior Thalamus ◽  
Anterior Thalamic Nuclei ◽  
Mammillothalamic Tract

AbstractA hippocampal-diencephalic-cortical network supports memory function. The anterior thalamic nuclei (ATN) form a key anatomical hub within this system. Consistent with this, injury to the mammillary body-ATN axis is associated with examples of clinical amnesia. However, there is only limited and indirect support that the output of ATN neurons actively enhances memory. Here, in rats, we first showed that mammillothalamic tract (MTT) lesions caused a persistent impairment in spatial working memory. MTT lesions also reduced rhythmic electrical activity across the memory system. Next, we introduced 8.5 Hz optogenetic theta-burst stimulation of the ATN glutamatergic neurons. The exogenously-triggered, regular pattern of stimulation produced an acute and substantial improvement of spatial working memory in rats with MTT lesions and enhanced rhythmic electrical activity. Neither behaviour nor rhythmic activity was affected by endogenous stimulation derived from the dorsal hippocampus. Analysis of immediate early gene activity, after the rats foraged for food in an open field, showed that exogenously-triggered ATN stimulation also increased Zif268 expression across memory-related structures. These findings provide clear evidence that increased ATN neuronal activity supports memory. They suggest that ATN-focused gene therapy may be feasible to counter clinical amnesia associated with dysfunction in the mammillary body-ATN axis.HighlightsThe mammillothalamic tract (MTT) supports neural activity in an extended memory system.Optogenetic activation of neurons in the anterior thalamus acutely improves memory after MTT lesions.Rescued memory associates with system-wide neuronal activation and enhanced EEG.Anterior thalamus actively sustains memory and is a feasible therapeutic target.Abstract FigureOptostimulation of anterior thalamus restores memory function after MTT lesionsCreated with BioRender.com

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