HOME >> BIOLOGY >> NEWS
Are you slow in coordinating your thoughts?

Many complex systems are composed of a large number of similar units that are connected in a complicated manner. An important example is provided by neural networks where nerve cells in the brain communicate by exchanging pulses via synaptic connections. Unlike atoms in a crystal which are arranged on a regular, e.g cubic lattice, nerve cells in the brain grow synaptic connections in a highly specific but irregular fashion. In such systems, a particular question is how rapid coordination, e.g. synchronization, between units of a complex network can be achieved. Three theoretical neuro-physicists from the Max Planck Institut for Flow Research in Goettingen have now shed new light on this question for networks of pulse-coupled oscillators, simple models of neural networks in the brain (Physical Review Letters 92: 074101, 2004).

To analyze the impact of network structure on its function the scientists use the theory of random matrices. Initiated by the work of Wigner on correlations of energy levels in atomic nuclei, random matrix theory has been extensively investigated since the 1950s. Its range of application has been continuously growing since then and today includes the study of various phenomena as different as quantum mechanical aspects of chaos and price fluctuations on financial markets. Timme, Wolf, and Geisel have now demonstrated that the theory of random matrices can also be applied to the dynamic evolution of complex networks. This new approach allows the explorationof the impact of a network's topology on its dynamics, systematically and analytically. From the theory of random matrices the researchers derived mathematical expressions which precisely determined how fast neurons can coordinate their activity, i.e. how fast neural networks can synchronize. Using these random matrix theory expressions, the dependence on properties of single neurons as well as of the network topology can be accurately predicted.

As might be expected, they fou
'"/>

Contact: Prof. Theo Geisel
geisel@chaos.gwdg.de
49-551-517-6400
Max-Planck-Gesellschaft
8-Mar-2004


Page: 1 2

Related biology news :

1. NIGMS funds Center for Quantitative Biology
2. Biology of aging
3. Chemistry meets Biology
4. Annual Chemical Biology Symposium at Yale May 14, 2004
5. Institute for Systems Biology, Pacific Northwest National Laboratory announce collaboration
6. Light Biology, a biotech company based on UT Southwestern technology, bought by NimbleGen Systems
7. Biochemistry and Molecular Biology: Research at the Interface of Biochemistry and Human Health
8. Experimental Biology 2004 - Translating the Genome
9. ASPB Plant Biology 2004 in Walt Disney World
10. The American Society for Biochemistry and Molecular Biology meets in Boston
11. Experimental Biology 2004 meets in Washington, D.C. April 17-21

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/31/2019)... ... 29, 2019 , ... FileWave, the multi-platform endpoint management solution ... of version 13.1. The new version extends FileWave’s mobile device management features on ... release functionality. Version 13.1 builds on FileWave’s version 13 that was released in ...
(Date:5/31/2019)... ... ... Enso Discoveries Chief Executive Officer, Patrick Farley, is honored to give back to ... his gratitude and respect for those who have served their country. In honor of ... presented a check for $1,000 to the Green Beret Foundation, via former US Army ...
(Date:5/24/2019)... WOODLANDS, Texas (PRWEB) , ... May 24, 2019 , ... ... been published and is now available on the company’s global website. , Crystallography Times ... on single crystal X-ray diffraction. It serves the X-ray analysis community by presenting the ...
Breaking Biology News(10 mins):
(Date:5/2/2019)... , ... May 02, 2019 , ... Stay on top ... medical device and food industries. Access to all webinars is free, so be sure ... in your field! , Visit http://www.xtalks.com to see our upcoming webinars: , ...
(Date:4/25/2019)... ... , ... Frank is an albino, deaf Great Dane. His owners rescued him when he was ... issues. Despite his hearing impairment, he was always an active and playful pup. Frank bonded ... every day. As the two grew, playtime became rougher and Frank ended up injuring his ...
(Date:4/16/2019)... ... April 16, 2019 , ... ... their project partner, the U.S. Army Center for Environmental Health Research (USACEHR), with ... Combined In-Licensing/Out-Licensing.” , Blue Sources, a veteran-owned company located at the Frederick Innovative ...
(Date:4/12/2019)... , ... April 12, 2019 , ... ... developments in neurotechnology and will educate about innovative tools and devices being used ... local listings for more information. , This segment of Advancements will focus on ...
Breaking Biology Technology:
Cached News: