Navigation Links
Brain networks change according to cognitive task

Using a newly released method to analyze functional magnetic resonance imaging (fMRI), Northwestern University researchers have demonstrated that the interconnections between different parts of the brain are dynamic and not static. This and other findings answer longstanding debates about how brain networks operate to solve different cognitive tasks. They are presented in the current (June 1) issue of the Journal of Neuroscience.

Equally important, the researchers discovered that the brain region that performed the integration of information shifted depending on the task their subjects performed. In this study, the subjects were assigned two language tasks. In both, subjects were asked to read individual words and then make a spelling or rhyming judgment.

"We found that one network takes different configurations depending on the goal of the task," said Tali Bitan, primary author of "Shifts of Effective Connectivity Within a Language Network during Rhyming and Spelling."

A post-doctoral fellow in the department of communication sciences and disorders, Bitan worked with Associate Professor James Booth of the same department and M-Marsel Mesulam, director of the Cognitive Neurology and Alzheimer's Disease Center in Northwestern's Feinberg School of Medicine.

Mesulam, who was among the first scientists to predict the existence of convergence zones within interconnected brain networks, said the study presents "the clearest and most convincing evidence to date" of the dynamics in effective connectivity.

To better understand dynamic effective connectivity, Mesulam compares the brain networks to a network of highways connecting different parts of a city. The highway is static. No matter how heavy the traffic load, it always has the same number of lanes. In the brain, there is a dynamic change that allows certain pathways to preferentially facilitate the demands of a given cognitive task. The brain highway in effect "adds lanes" to acco
'"/>

Source:Northwestern University


Page: 1 2 3

Related biology news :

1. Drug That Tags Decision-making Areas Of The Brain May Aid
2. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
3. Transport System Smuggles Medicines Into Brain
4. Bird Brains Show How Trial and Error May Contribute to Learning
5. VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain
6. Wiley announces publication of Databasing the Brain
7. Scientists Propose Sweeping Changes to Naming of Bird Neurosystems to Acknowledge Their True Brainpower
8. Brain-mapping technique aids understanding of sleep, wakefulness
9. Some Brain Cells Change Channels To Fine-tune The Message
10. Brain Scans Reveal How Gene May Boost Schizophrenia Risk
11. Brain-injury rehabilitation depends on acetylcholine circuitry
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Brain networks change according cognitive task

(Date:10/16/2014)... 2014) – Post-menopausal women experienced improvements in vaginal ... or genital bleeding, after 12 weeks of daily ... soy germ-based nutritional supplement previously shown to help ... peer-reviewed pilot study reported in a poster at ... meeting. , "These data documented improved vaginal ...
(Date:10/15/2014)... , Oct. 15, 2014 Sandata Technologies, ... home and community-based care, today announced it released ... Sandata,s Santrax® Electronic Visit Verification™ Solution (EVV™)  for ... a home health company founded in 1996 and ... . The study details the ...
(Date:10/15/2014)... biophysics textbook and it describes how life functions and ... into biological systems and provides an understanding of the ... how our genes make proteins that control the dynamics ... an organism. It quantifies the principles of life and ... on both large and small scales. The book is ...
Breaking Biology News(10 mins):S-equol supplements associated with improved measures of reproductive health in postmenopausal women 2Sandata Announces Case Study with Quality Care Services, Inc. 2New book about life as seen from physics 2
... camera traps, wildlife researchers including doctoral candidate Jennifer McCarthy ... of Massachusetts Amherst recently captured photographs of one of ... They say it may now be found only in ... Their pictures and other observations are reported in ...
... professionals from 32 countries throughout Latin America and the ... of the International Osteoporosis Foundation,s (IOF) 1st Latin America ... four-day meeting, which extends to May 27 at the ... and the latest advances in the management of osteoporosis ...
... May 24, 2012 (BRONX, NY) "It,s in ... about factors that allow centenarians to reach age 100 and ... variations that offer a physiological advantage such as high levels ... College of Medicine and Ferkauf Graduate School of ...
Cached Biology News:UMass Amherst wildlife researcher photographs rare Sumatran rabbit 2UMass Amherst wildlife researcher photographs rare Sumatran rabbit 3Major osteoporosis meeting opens in São Paulo 2'Personality genes' may help account for longevity 2
(Date:10/20/2014)... MENLO PARK, Calif. , Oct. 20, 2014 ... announced today that the Company has signed a ... Institute of Regenerative Medicine (CIRM), effective October 1, ... of Clinical Development payments and the release of ... $14.3 million CIRM grant award for clinical development ...
(Date:10/20/2014)... Oct. 20, 2014 PureTech , a ... big healthcare problems, announced today the closing of ... participation from Invesco Perpetual, a $120 Billion group ... drive PureTech,s existing pipeline forward and to advance ... the scientific creativity to really go for the ...
(Date:10/19/2014)... The Latin American hardware encryption display ... America with analysis and forecast of revenue. This market ... expected to reach $2,366.8 million by 2018, at a ... through the TOC of the Latin American hardware encryption ... analysis provided. It also provides a glimpse of the ...
(Date:10/19/2014)... 19, 2014 The Asian Automatic patient ... with analysis and forecast of revenue. The Automatic patient ... around $463.9 million by 2018, at a developing CAGR ... the TOC of the Asian Automatic patient billing market, ... This also provides a glimpse of the segmentation of ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3
... Group,(Debiopharm), a global independent biopharmaceutical development specialist,in ... that it,received current Good Manufacturing Practices (cGMP) ... biochemical quality control work,conducted at its laboratory ... of the Lausanne site was extended for ...
... SGX Pharmaceuticals, Inc.,(Nasdaq: SGXP ) today provided ... Novartis focused on the development and commercialization of,BCR-ABL ... and drug resistant,Chronic Myelogenous Leukemia (CML). Under ... number of,potential drug candidates, with the anticipated timeline ...
... MichBio, the association for,Michigan,s life sciences industry, announced the ... Lansing. Guided tours will be available to Expo ... of the Expo, October 16. Attendees must register for ... and maps to the,locations. Visitors will transport themselves to ...
Cached Biology Technology:Debiopharm Receives cGMP Certification for Quality Control of its Drug Products 2SGX Provides Update on BCR-ABL Collaboration 2SGX Provides Update on BCR-ABL Collaboration 3MichBio Announces Expo Tours; Extends Deadline for Innovator Showcase Applications 2
The F40 pump maintenance kit is used to service one F40 pump of a BioLogic DuoFlow workstation. It includes 2 piston seals, 4 check valves, seal removal tool, and 2 O-rings....
...
...
...
Biology Products: