scholarly journals Formation and maintenance of robust long-term information storage in the presence of synaptic turnover

2015 ◽  
Author(s):  
Michael Fauth ◽  
Florentin Wörgötter ◽  
Christian Tetzlaff
Keyword(s):  
Time Course ◽  
Information Storage ◽  
High Turnover ◽  
Fast Learning ◽  
Long Term Storage ◽  
New Information ◽  
Neural Substrate ◽  
Stored Information ◽  
Term Storage

A long-standing problem is how memories can be stored for very long times despite the volatility of the underlying neural substrate, most notably the high turnover of dendritic spines and synapses. To address this problem, here we are using a generic and simple probabilistic model for the creation and removal of synapses. We show that information can be stored for several months when utilizing the intrinsic dynamics of multi-synapse connections. In such systems, single synapses can still show high turnover, which enables fast learning of new information, but this will not perturb prior stored information (slow forgetting), which is represented by the compound state of the connections. The model matches the time course of recent experimental spine data during learning and memory in mice supporting the assumption of multi-synapse connections as the basis for long-term storage.

MODERN PROBLEMATICS AND ANALYSIS OF EFFICIENCY OF APPLICATION OF DIFFERENT APPROACHES TO DESTRUCTION OF INFORMATION ON MAGNETIC MEDIA

2019 ◽  
Vol 2 (12) ◽  
pp. 154-164
Author(s):  
O. Semenenko ◽  
O. Vodchyts ◽  
V. Koverga ◽  
R. Lukash ◽  
O. Lutsenko
Keyword(s):  
Armed Forces ◽  
Information Storage ◽  
Storage Device ◽  
Magnetic Media ◽  
Long Term Storage ◽  
Physical Impact ◽  
And Storage ◽  
Term Storage

The introduction and active use of information transmission and storage systems in the Ministry of Defense (MoD) of Ukraine form the need to develop ways of guaranteed removal of data from media after their use or long-term storage. Such a task is an essential component of the functioning of any information security system. The article analyzes the problems of guaranteed destruction of information on magnetic media. An overview of approaches to the guaranteed destruction of information on magnetic media of different types is presented, and partial estimates of the effectiveness of their application are given by some generally accepted indicators of performance evaluation. The article also describes the classification of methods of destruction of information depending on the influence on its medium. The results of the analysis revealed the main problems of application of software methods and methods of demagnetization of the information carrier. The issue of guaranteed destruction of information from modern SSD devices, which are actively used in the formation of new systems of information accumulation and processing, became particularly relevant in the article. In today's conditions of development of the Armed Forces of Ukraine, methods of mechanical and thermal destruction are more commonly used today. In the medium term, the vector of the use of information elimination methods will change towards the methods of physical impact by the pulsed magnetic field and the software methods that allow to store the information storage device, but this today requires specialists to develop new ways of protecting information in order to avoid its leakage.

ROLE AND USAGE OF ICT IN SCHOOL EDUCATION

2017 ◽  
Vol 4 (36) ◽  
Author(s):  
V. Madhavi
Keyword(s):  
Short Term Memory ◽  
School Education ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Long Term Storage ◽  
New Information ◽  
Concrete Form ◽  
Term Storage

When we are working on a computer, the information goes into short term memory. Unless we deliberately save the data onto long term storage, it is lost very quickly. The method we use to save new information that is presented to us determines that we most likely will retrieve it in the future. Similarly the concepts that are explained to the students have to be sent to their long term memory, i.e the abstract has to be made into the concrete form. This is possible by using ICT in classroom situation for making a merry in understanding the concepts if the school education and life. The usage of ICT will not only enhance learning environment but also prepare, next generation for future lives and career as said by Wheeler.

Adult Neurogenesis in the Songbird: Region-Specific Contributions of New Neurons to Behavioral Plasticity and Stability

2016 ◽  
Vol 87 (3) ◽  
pp. 191-204 ◽  
Author(s):  
Carolyn L. Pytte
Keyword(s):  
Behavioral Plasticity ◽  
Brain Regions ◽  
Long Term Storage ◽  
Behavioral Stability ◽  
New Information ◽  
Neuron Function ◽  
Motor Production ◽  
Term Storage

Our understanding of the role of new neurons in learning and encoding new information has been largely based on studies of new neurons in the mammalian dentate gyrus and olfactory bulb - brain regions that may be specialized for learning. Thus the role of new neurons in regions that serve other functions has yet to be fully explored. The song system provides a model for studying new neuron function in brain regions that contribute differently to song learning, song auditory discrimination, and song motor production. These regions subserve learning as well as long-term storage of previously learned information. This review examines the differences between learning-based and activity-based retention of new neurons and explores the potential contributions of new neurons to behavioral stability in the song motor production pathway.

scholarly journals Visual working memory buffers information retrieved from visual long-term memory

2017 ◽  
Vol 114 (20) ◽  
pp. 5306-5311 ◽  
Author(s):  
Keisuke Fukuda ◽  
Geoffrey F. Woodman
Keyword(s):  
Working Memory ◽  
Human Memory ◽  
Long Term Memory ◽  
High Temporal Resolution ◽  
Term Memory ◽  
Long Term Storage ◽  
New Information ◽  
Neurophysiological Activity ◽  
Term Storage

Human memory is thought to consist of long-term storage and short-term storage mechanisms, the latter known as working memory. Although it has long been assumed that information retrieved from long-term memory is represented in working memory, we lack neural evidence for this and need neural measures that allow us to watch this retrieval into working memory unfold with high temporal resolution. Here, we show that human electrophysiology can be used to track information as it is brought back into working memory during retrieval from long-term memory. Specifically, we found that the retrieval of information from long-term memory was limited to just a few simple objects’ worth of information at once, and elicited a pattern of neurophysiological activity similar to that observed when people encode new information into working memory. Our findings suggest that working memory is where information is buffered when being retrieved from long-term memory and reconcile current theories of memory retrieval with classic notions about the memory mechanisms involved.

Modelling of Moisture Movement in Wood during Outdoor Storage

2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius
Keyword(s):  
Experimental Data ◽  
Finite Difference ◽  
Climatic Conditions ◽  
Two Dimensional ◽  
Moisture Movement ◽  
Finite Difference Technique ◽  
Long Term Storage ◽  
Space Formulation ◽  
Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

Trehalose: a cryoprotectant that enhances recovery and preserves function of human pancreatic islets after long-term storage

Diabetes ◽  
1997 ◽  
Vol 46 (3) ◽  
pp. 519-523 ◽  
Author(s):  
G. M. Beattie ◽  
J. H. Crowe ◽  
A. D. Lopez ◽  
V. Cirulli ◽  
C. Ricordi ◽  
...  
Keyword(s):  
Pancreatic Islets ◽  
Human Pancreatic Islets ◽  
Long Term Storage ◽  
Term Storage
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