Navigation Links
Researchers gain new insights into brain neuronal networks
Date:11/4/2013

A paper published in a special edition of the journal Science proposes a novel understanding of brain architecture using a network representation of connections within the primate cortex. Zoltn Toroczkai, professor of physics at the University of Notre Dame and co-director of the Interdisciplinary Center for Network Science and Applications, is a co-author of the paper "Cortical High-Density Counterstream Architectures."

Using brain-wide and consistent tracer data, the researchers describe the cortex as a network of connections with a "bow tie" structure characterized by a high-efficiency, dense core connecting with "wings" of feed-forward and feedback pathways to the rest of the cortex (periphery). The local circuits, reaching to within 2.5 millimeters and taking up more than 70 percent of all the connections in the macaque cortex, are integrated across areas with different functional modalities (somatosensory, motor, cognitive) with medium- to long-range projections.

The authors also report on a simple network model that incorporates the physical principle of entropic cost to long wiring and the spatial positioning of the functional areas in the cortex. They show that this model reproduces the properties of the connectivity data in the experiments, including the structure of the bow tie. The wings of the bow tie emerge from the counterstream organization of the feed-forward and feedback nature of the pathways. They also demonstrate that, contrary to previous beliefs, such high-density cortical graphs can achieve simultaneously strong connectivity (almost direct between any two areas), communication efficiency, and economy of connections (shown via optimizing total wire cost) via weight-distance correlations that are also consequences of this simple network model.

This bow tie arrangement is a typical feature of self-organizing information processing systems. The paper notes that the cortex has some analogies with information-pro
'/>"/>

Contact: Zoltan Toroczkai
toro@nd.edu
574-631-2618
University of Notre Dame
Source:Eurekalert

Page: 1 2

Related medicine news :

1. NIH awards $20 million over 5 years to train next generation of global health researchers
2. Researchers develop a new cell and animal model of inflammatory breast cancer
3. Researchers uncover a viable way for colorectal cancer patients to overcome drug resistance
4. Researchers Find Gene Mutations That May Be a Key to Autism
5. Researchers find evidence of banned antibiotics in poultry products
6. NJ stroke researchers report advances in spatial neglect research at AAN Conference
7. Autism by the numbers: Yale researchers examine impact of new diagnostic criteria
8. Researchers Map Brain Regions Linked to Intelligence
9. Researchers ID Genes That May Determine Mental Illness
10. Researchers Develop Blood Test for Depression
11. University of Cincinnati researchers win $3.7M grant from US Department of Defense
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... January 23, 2015 Recently, Weddingshe.com has added ... and has announced its highest annual revenues in the past ... its popular glamorous wedding dresses. , According to the sales ... wedding dress promotions for them in 2015. This point can ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Four years since the ... – which coincided with the marriage of Avasa & Matthew Love ... ROAD, which is scheduled for release through White Swan Records on ... that there is a sacred path available to all of us ...
(Date:1/22/2015)... January 22, 2015 EBSCO Information Services ... are expanding their relationship in an effort to further promote ... world. While EBSCO has long made AMA journals available via ... agent for The JAMA Network. , Long known ...
(Date:1/22/2015)... is a famous dress online store for wedding dresses and ... collection of wedding dresses , and launches a site-wide women’s ... dress on your big day; the wedding gown is the ... to find the most suitable wedding dress. Now, we are ...
(Date:1/22/2015)... Lower-Auto-Insurance.com has released a new blog post explaining ... for reducing the costs of an auto insurance policy . ... to get lower prices for their vehicle insurance policies. The safety ... determining policy costs. Because of this, drivers should always carry ...
Breaking Medicine News(10 mins):Health News:Weddingshe Announces A Special Offer On Its Popular Glamorous Wedding Dresses 2Health News:THE ROAD by Avasa & Matthew Love -- A New Album 2Health News:THE ROAD by Avasa & Matthew Love -- A New Album 3Health News:THE ROAD by Avasa & Matthew Love -- A New Album 4Health News:EBSCO Expands Partnership with the American Medical Association 2Health News:EBSCO Expands Partnership with the American Medical Association 3Health News:EBSCO Expands Partnership with the American Medical Association 4Health News:Find The Most Suitable Wedding Dress At JJsHouse.com 2Health News:Driving Safe And Other Factors That Make Auto Insurance Affordable! 2
... not clamped right after birth, thus allowing the blood ... late clamping, was replaced by early clamping, that is, ... However, this new practice lacks studies corroborating its benefits. ... clamping should be done have shown contradictory results. ...
... research on animals, conducted by the National Toxicology Program ... to as hexavalent chromium (chromium 6) causes cancer ... ,Hexavalent chromium compounds are often used in electroplating, ... in some drinking water sources. ,The two-year ...
... and alarmed, a good number of yoga enthusiasts and experts ... yoga overseas. ,Reacting to recent reports of yet ... here feel that the very idea of patenting knowledge like ... is highly unjustified and when it comes to patenting yoga, ...
... each year due to the failure to prevent blood clots ... experts in this weeks BMJ. ,Their warning follows ... by the National Institute for Health and Clinical Excellence (NICE), ... ,It is estimated that VTE kills around 60,000 people every ...
... arrested by the California Department of Insurance and the ... ,These three are being accused of performing ... million to insurance companies. ,Likened to "body ... arrested Wednesday for their alleged roles in an elaborate ...
... of gene therapy has for the first time succeeded ... a report in Cancer Research this week. ... at The Institute of Cancer Research, combines cutting-edge techniques ... Prodrug Therapy), the treatment uses a virus to attack ...
Cached Medicine News:Health News:Late Clamping of Umbilical Cord may Reduce Anemia in Children 2Health News:Late Clamping of Umbilical Cord may Reduce Anemia in Children 3Health News:Yoga Enthusiasts Oppose Patenting Yoga Overseas 2Health News:25,000 Needless Deaths Each Year Due to Failure to Tackle Blood Clots in Hospital 2Health News:Rent-A Body Scam Busted 2Health News:Rent-A Body Scam Busted 3Health News:Suicide Gene Therapy Kills Bowel Cancer Cells 2
(Date:1/23/2015)... LONDON and BOSTON , January ... structure-guided drug discovery and development company, is delighted to announce ... has been awarded to Miles Congreve (Vice President ... co-founder) and Malcolm Weir (Chief Executive Officer and ...
(Date:1/22/2015)... , Jan. 22, 2015  ViewRay™, a privately held medical ... an exclusive distributor agreement with ITOCHU Corporation (Tokyo Stock ... system for the treatment of cancer in ... is the world,s first and only MRI-guided radiation therapy ...
(Date:1/22/2015)... UPI ), a medical device company that develops, manufactures ... today reported financial results for the fiscal 2015 third ... the Company,s Urgent ®  PC Neuromodulation System grew 14.5% ... compared to $3.9 million in the third quarter of ...
Breaking Medicine Technology:Heptares Scientists to Receive the Malcolm Campbell Memorial Prize for 2015 in Recognition of Their Outstanding Contribution to GPCR Drug Discovery 2Heptares Scientists to Receive the Malcolm Campbell Memorial Prize for 2015 in Recognition of Their Outstanding Contribution to GPCR Drug Discovery 3Heptares Scientists to Receive the Malcolm Campbell Memorial Prize for 2015 in Recognition of Their Outstanding Contribution to GPCR Drug Discovery 4ITOCHU Named the Exclusive Distributor for ViewRay's MRI-Guided Radiation Therapy System in Japan 2Uroplasty Reports Record Revenue in Fiscal Third Quarter 2Uroplasty Reports Record Revenue in Fiscal Third Quarter 3Uroplasty Reports Record Revenue in Fiscal Third Quarter 4Uroplasty Reports Record Revenue in Fiscal Third Quarter 5Uroplasty Reports Record Revenue in Fiscal Third Quarter 6Uroplasty Reports Record Revenue in Fiscal Third Quarter 7Uroplasty Reports Record Revenue in Fiscal Third Quarter 8Uroplasty Reports Record Revenue in Fiscal Third Quarter 9Uroplasty Reports Record Revenue in Fiscal Third Quarter 10Uroplasty Reports Record Revenue in Fiscal Third Quarter 11Uroplasty Reports Record Revenue in Fiscal Third Quarter 12Uroplasty Reports Record Revenue in Fiscal Third Quarter 13Uroplasty Reports Record Revenue in Fiscal Third Quarter 14Uroplasty Reports Record Revenue in Fiscal Third Quarter 15Uroplasty Reports Record Revenue in Fiscal Third Quarter 16Uroplasty Reports Record Revenue in Fiscal Third Quarter 17Uroplasty Reports Record Revenue in Fiscal Third Quarter 18
... Decision Marks Delay in Potential First Treatment for Deadly Disease ... SAN ... Pulmonary Fibrosis (CPF), representing tens of thousands of patients, is responding ... which will delay potential approval of the first drug in the treatment of ...
... , May 4 A new report identifies ... "rogue" Internet pharmacies that display fake pharmacy licenses or sell prescription drugs ... , ... firms LegitScript and KnujOn provided sixteen domain name ...
Cached Medicine Technology:Coalition for Pulmonary Fibrosis Responds to News of Further Review of Pirfenidone By FDA 2Coalition for Pulmonary Fibrosis Responds to News of Further Review of Pirfenidone By FDA 3Coalition for Pulmonary Fibrosis Responds to News of Further Review of Pirfenidone By FDA 4Fake Pharmacy Licenses, No-Prescription Meds OK with Internet Companies, LegitScript Reports 2
CCR Medical conventional laryngoscopes....
CCR Medical conventional laryngoscopes....
... LMA™ Airway., ,Launched in 1988, this ... is now standard practice in general anesthesia. ... the LMA Classic™ is a safe hands ... ,The LMA Classic™ can be used for ...
... Wire-Reinforced LMA ™ Airway., ,The ... tube which allows it to be ... while maintaining a good seal. This ... and dental surgery, or other procedures ...
Medicine Products: