Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Neural networks: All versatility in one model

13.03.2018

Max Planck researchers Nataliya Kraynyukova and Tatjana Tchumatchenko have explored how the structure of neural networks is related to their ability to produce a set of fundamental cortical functions. They have shown that only one model is sufficient to explain the variety of cortical computations. In the latest issue of Proceedings of the National Academy of Sciences of the United States of America they now report on these results.

Our sensory organs translate sensory stimuli into electrical signals, which are then transmitted and processed by the neural networks in the brain. Among other things, these transformations in the cerebral cortex allow us to process visual impressions, store memories, and make decisions.


Processing of visual memories is reflected in the activity of the visual cortex neurons.

N. Kraynyukova/Max Planck Institute for Brain Research

Although neuroscience is still far from an adequate understanding of these impressive processes in the brain, it is nevertheless possible to relate them to a series of brain states.

The researchers of the working group "Theory of Neuronal Dynamics" at the Max Planck Institute for Brain Research have now shown how a single network model can adequately represent the diverse states of neuronal activity.

To do so, they extended the "Stabilized Supralinear Network Model" (SSN) that researchers have previously used to successfully display important functions of the visual system.

The two scientists now found out that the possibilities of the SSN are not yet exhausted, and showed when the SSN can also describe bistable, oscillating and persistent states. These results pave the way for a unified theory of cortical function.

Kraynyukova: "The structure of a network is closely related to its ability to create certain functions. Our results accurately describe this relationship and, allow us to obtain information about the structure of the network based on its activity.”

Tchumatchenko says "This theory is very promising. It can now even realistically represent brain functions such as short memory and decision making."

Weitere Informationen:

http://www.pnas.org/content/early/2018/03/06/1700080115.short?rss=1

Dr. Arjan Vink | Max-Planck-Institut für Hirnforschung
Further information:
http://www.brain.mpg.de/

More articles from Life Sciences:

nachricht Living Components
22.07.2019 | Albert-Ludwigs-Universität Freiburg im Breisgau

nachricht Regulation of root growth from afar: How genes from leaf cells affect root growth
22.07.2019 | Max-Planck-Institut für Molekulare Pflanzenphysiologie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Better thermal conductivity by adjusting the arrangement of atoms

Adjusting the thermal conductivity of materials is one of the challenges nanoscience is currently facing. Together with colleagues from the Netherlands and Spain, researchers from the University of Basel have shown that the atomic vibrations that determine heat generation in nanowires can be controlled through the arrangement of atoms alone. The scientists will publish the results shortly in the journal Nano Letters.

In the electronics and computer industry, components are becoming ever smaller and more powerful. However, there are problems with the heat generation. It is...

Im Focus: First-ever visualizations of electrical gating effects on electronic structure

Scientists have visualised the electronic structure in a microelectronic device for the first time, opening up opportunities for finely-tuned high performance electronic devices.

Physicists from the University of Warwick and the University of Washington have developed a technique to measure the energy and momentum of electrons in...

Im Focus: Megakaryocytes act as „bouncers“ restraining cell migration in the bone marrow

Scientists at the University Würzburg and University Hospital of Würzburg found that megakaryocytes act as “bouncers” and thus modulate bone marrow niche properties and cell migration dynamics. The study was published in July in the Journal “Haematologica”.

Hematopoiesis is the process of forming blood cells, which occurs predominantly in the bone marrow. The bone marrow produces all types of blood cells: red...

Im Focus: Artificial neural network resolves puzzles from condensed matter physics: Which is the perfect quantum theory?

For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University in the United States has now successfully deployed artificial neural networks for image analysis of quantum systems.

Is that a dog or a cat? Such a classification is a prime example of machine learning: artificial neural networks can be trained to analyze images by looking...

Im Focus: Extremely hard yet metallically conductive: Bayreuth researchers develop novel material with high-tech prospects

An international research group led by scientists from the University of Bayreuth has produced a previously unknown material: Rhenium nitride pernitride. Thanks to combining properties that were previously considered incompatible, it looks set to become highly attractive for technological applications. Indeed, it is a super-hard metallic conductor that can withstand extremely high pressures like a diamond. A process now developed in Bayreuth opens up the possibility of producing rhenium nitride pernitride and other technologically interesting materials in sufficiently large quantity for their properties characterisation. The new findings are presented in "Nature Communications".

The possibility of finding a compound that was metallically conductive, super-hard, and ultra-incompressible was long considered unlikely in science. It was...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on UV LED Technologies & Applications – ICULTA 2020 | Call for Abstracts

24.06.2019 | Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

 
Latest News

Bridging the nanoscale gap: A deep look inside atomic switches

22.07.2019 | Physics and Astronomy

Regulation of root growth from afar: How genes from leaf cells affect root growth

22.07.2019 | Life Sciences

USF geoscientists discover mechanisms controlling Greenland ice sheet collapse

22.07.2019 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>