Navigation Links
Modeling the restless brain

nderlying structural topology," Sporns and Honey wrote in an article appearing this week in the Proceedings of the National Academy of Sciences early edition online.

The article, which will be available at http://www.pnas.org/cgi/doi/10.1073/pnas.0701519104, includes a link to a movie that visualizes what spontaneous fluctuations in the monkey's brain would look like. Coauthors of the article are Rolf K├Âtter, a neuroanatomist at Radboud University in Nijmegen in the Netherlands, and Michael Breakspear, a cognitive neuroscientist at the University of New South Wales in Australia.

When a person reads a book or talks with a friend, task-related neural activity occurs in different regions of the brain, but this activity only accounts for around 2 to 5 percent of the total activity of the brain. Fluctuations of similar magnitude -- the ones studied by Sporns and Honey -- occur when a person is at rest, doing nothing.

The nature of these "resting state fluctuations" is an active topic of research in cognitive neuroscience, with their mysterious origin prompting one prominent researcher to label them the "brain's dark energy," Sporns said. As yet, no one knows why these fluctuations occur or what their function might be.

Sporns and Honey suggest that a closer look at brain structure might provide a new perspective.

Despite the huge amount of work being done by neuroscientists, relatively little is known about how the human brain is structured -- how, for example the hundreds (the number is unknown) of regions in the human brain are connected. The computer model created by Sporns and Honey suggests that this very pattern of connectivity is crucial to generating and shaping brain activity in the resting and active brain.

Empirical work on the human brain is challenging due to the fact that the brain's intricacies cannot simply be manipulated and
'"/>

Source:Indiana University


Page: 1 2 3

Related biology news :

1. Controversial drug shown to act on brain protein to cut alcohol use
2. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
3. Mouse brain tumors mimic those in human genetic disorder
4. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
5. First atlas of key brain genes could speed research on cancer, neurological diseases
6. NYU study reveals how brains immune system fights viral encephalitis
7. Stem cells from brain transformed to produce insulin at Stanford
8. Birds brains reveal source of songs
9. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
10. Revolutionary nanotechnology illuminates brain cells at work
11. A puzzle piece found in unraveling the wiring of the brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Modeling the restless brain

(Date:7/24/2014)... animal species for food or commercial food sale, has ... the decline of many species of primates and other ... than half of the species being consumed are birds, ... not only the meat made available for sale but ... by hunters and brought to villages for consumption, we ...
(Date:7/24/2014)... study has identified two factors that characterize sustainable ... production of highly qualified physics teachers. Specifically, one ... physics teacher education in combination with institutional motivation ... viable. Science, Technology, Engineering and Math (STEM) teacher ... study points the way for institutions seeking to ...
(Date:7/24/2014)... TORONTO, June 24, 2014 Some sticky research out ... fight against a certain species of toxic grass fungus: ... this month,s Biology Letters , "Ungulate saliva inhibits ... when applied to red fescue grass (which hosts a ... results in slower fungus growth and less toxicity. , ...
Breaking Biology News(10 mins):Creating sustainable STEM teacher preparation programs 2Moose drool inhibits growth of toxic fungus: York U research 2
... has termed the "World Series of Science," featuring topics ranging ... convicted of murder to a spray-on coating to keep America,s ... WHERE: The Pennsylvania Convention Center and downtown ... 2012 WHY: To join an estimated 14,000 ...
... Elsevier, a world-leading provider of scientific, technical and medical ... Applied and Translational Genomics , an open access journal. ... genomics and translational research. The completion of ... takes the genetic code and applies it to research ...
... MAA research team led by Xian Chang Li, MD, PhD, ... light on how a population of lymphocytes, called CD4+ T ... In particular, the team uncovered that a particular cell surface ... T helper cells that make copious amounts of interleukin-9 (IL-9) ...
Cached Biology News:Press accreditation for 'World Series of Science' 2Cell receptor has proclivity for T helper 9 cells, airway inflammation 2
(Date:7/25/2014)...  Galmed Pharmaceuticals Ltd. (Nasdaq: GLMD ) ... and commercialization of a once-daily, oral therapy for the ... financial results for the period ended June 30, 2014. ... Reported cash and cash equivalents totaling $37.4 million on ... 2013.  , Reported a net loss of $3.9 ...
(Date:7/24/2014)... 24, 2014 -- Keryx Biopharmaceuticals, Inc. (Nasdaq:KERX) (the "Company") ... active control Phase 3 study of Zerenex (ferric citrate), ... the treatment of hyperphosphatemia in patients with end-stage renal ... and iRon delivery with FErric CiTrate in EsrD) was ... American Society of Nephrology ( JASN ). ...
(Date:7/24/2014)... Calif. , July 24, 2014  Asterias ... in the emerging field of regenerative medicine, announced ... of a presentation to investors on Tuesday, July ... PDT.  The presentation will include an overview of ... access the webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at ...
(Date:7/24/2014)... to materialise. Yet, scientists are making progress in ... One such approach relies on quantum dotsa kind ... electric field. A new study demonstrates that changing ... (TQDs) with electrical impulses can help better control ... be used as quantum information units, which would ...
Breaking Biology Technology:Galmed Pharmaceuticals Reports First Half 2014 Financial Results 2Galmed Pharmaceuticals Reports First Half 2014 Financial Results 3Galmed Pharmaceuticals Reports First Half 2014 Financial Results 4Galmed Pharmaceuticals Reports First Half 2014 Financial Results 5Galmed Pharmaceuticals Reports First Half 2014 Financial Results 6Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 2Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 3Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 4Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4
... ... online periodical covering the news and obsessions of fans of radical technological change--a scene ... arrives at newsstands at the end of September; the issue is available digitally now. ... San Jose, ...
... ... is also ranked as one of Britain’s most respected companies, has singled out NutraPharma ... , ... 2009 -- Thomson Reuters, one of the world’s largest stock market analytics firms which ...
... research fields of nanoscience and nanotechnology are commonly thought ... areas of science and technology to make important advances. ... of the journal Nature Nanotechnology finds that ... not much more so than other modern disciplines such ...
Cached Biology Technology:New Transhumanist Magazine is Going into Print - Digital Edition is Available Now 2Reuters Highlights NutraPharma Financial Giant Predicts NutraPharma (OTCBB: NPHC) Shares Likely to Outperform the Market 2Analysis confirms that nano-related research has strong multidisciplinary roots 2Analysis confirms that nano-related research has strong multidisciplinary roots 3Analysis confirms that nano-related research has strong multidisciplinary roots 4
... LC Sciences provides a comprehensive kinase ... kinase substrate (PKS) peptide microarrays synthesized ... scale kinase profiling, quantitative measurement of ... research. This comprehensive service includes preparation ...
... Sigmas 10 Capillary Electrophoresis Running Buffer was ... high throughput demands of todays sequencing labs. ... of TBE to the gel-based sequencing community ... scale capacity to meet your buffer needs. ...
... Rapid-Screen cDNA Library Panels were designed for ... sets of PCRs to identify the desired ... performed in a 96-well "Master Plate," where ... clones. Having identified the positive well(s) by ...
... The Rapid-Screen cDNA Library Panels were designed ... three sets of PCRs to identify the ... is performed in a 96-well "Master Plate," ... 5,000 clones. Having identified the positive well(s) ...
Biology Products: