Navigation Links
Daydreaming simulated by computer model
Date:7/12/2013

ers began with a process for simulating small groups of neurons, including factors that decrease or increase the likelihood that a group of cells will send a signal.

"In a way, we treated small regions of the brain like cognitive units: not as individual cells but as groups of cells," said Gustavo Deco, PhD, professor and head of the Computational Neuroscience Group in Barcelona. "The activity of these cognitive units sends out excitatory signals to the other units through anatomical connections. This makes the connected units more or less likely to synchronize their signals."

Based on data from brain scans, researchers assembled 66 cognitive units in each hemisphere, and interconnected them in anatomical patterns similar to the connections present in the brain.

Scientists set up the model so that the individual units went through the signaling process at random low frequencies that had previously been observed in brain cells in culture and in recordings of resting brain activity.

Next, researchers let the model run, slowly changing the coupling, or the strength of the connections between units. At a specific coupling value, the interconnections between units sending impulses soon began to create coordinated patterns of activity.

"Even though we started the cognitive units with random low activity levels, the connections allowed the units to synchronize," Deco said. "The spatial pattern of synchronization that we eventually observed approximates very wellabout 70 percentto the patterns we see in scans of resting human brains."

Using the model to simulate 20 minutes of human brain activity took a cluster of powerful computers 26 hours. But researchers were able to simplify the mathematics to make it possible to run the model on a typical computer.

"This simpler whole brain model allows us to test a number of different hypotheses on how the structural connections generate dynamics of brain function at res
'/>"/>

Contact: Michael C. Purdy
purdym@wustl.edu
314-286-0122
Washington University School of Medicine
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Computer modeling technique goes viral at Brandeis
2. Computer simulations yield clues to how cells interact with surroundings
3. Computer model may help athletes and soldiers avoid brain damage and concussions
4. Computer modeling reveals how surprisingly potent hepatitis C drug works
5. New supercomputer to aid genomics research
6. New supercomputer coming to EMSL this summer, supplied by Atipa Technologies
7. Virginia Tech computer scientists develop new way to study molecular networks
8. Iowa State computer, electrical engineers working to help biologists cope with big data
9. How computers push on the molecules they simulate
10. Total donates high-speed computer cluster to UH
11. A better thought-controlled computer cursor
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/7/2014)... conjunction with the Glendale and ... the Verdugos has announced the " GLENDALE - ... to keep the Verdugo Regional Crime Lab operational after its ... existence, the Lab has processed more than 400 DNA samples, ... "Because our number one priority is the wellbeing of ...
(Date:11/6/2014)... occur because of metastasis, yet progress in preventing ... , "It,s been particularly challenging to design drugs ... fellow in systems biology at Harvard Medical School. ... after they,ve already metastasized." , Gujral and colleagues ... help researchers better understand how metastasis begins. Their ...
(Date:11/5/2014)... Fidel Santamaria, associate professor of biology in the ... researchers in the nation selected to receive a ... Grant for Exploratory Research (EAGER). The funding supports ... support researchers to create new technology that will ... Santamaria, complex behaviors in neuroscience are broken into ...
Breaking Biology News(10 mins):Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2Migration negation 2Migration negation 3UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3
... 2008, 1:00 p.m. ET) Research published in Nature Chemical ... death pathway, termed necroptosis, all target and inhibit RIP1 ... Induced by trauma such as a heart attack or ... tissue damage contributing to death or long-term disability. The ...
... In a bid to significantly boost our understanding of ... (UEA) and the Lowestoft-based Centre for Environment, Fisheries & ... The alliance will strengthen existing collaboration between the ... research. The pressures of global climate change on the ...
... (11 April) at the UK National Stem Cell Network ... bone stem cells may be harnessed to repair the ... of osteoarthritis. Scientists at Cardiff University have successfully ... although it cannot become any cell in the body ...
Cached Biology News:Stopping unwanted cell death: Implications for drug discovery 2Stopping unwanted cell death: Implications for drug discovery 3New UEA-Cefas alliance launched 2Stem cells offer cartilage repair hope for arthritis sufferers 2
(Date:11/26/2014)... 25, 2014 Miles Holder, formerly of ... Graphel Carbon Products team as Sales/Marketing Manager. Mr. Holder ... customer service for the graphite industry. , “We are ... team,” stated Dave Trinkley, VP of Market and Product ... of experience in the graphite industry, along with his ...
(Date:11/26/2014)... N.J. and WILMINGTON, DE (PRWEB) November 26, 2014 ... 2nd Annual MPN Heroes recognition reception on December 5, ... of Hematology’s annual meeting. The MPN Heroes event will ... contributions in the field of myeloproliferative neoplasms (MPNs). ... show "Nashville," will discuss his family's cancer journey at ...
(Date:11/26/2014)... Theravalues Corporation est fier d,annoncer le lancement de ... Hi Europe 2014 (du 2 au 4 décembre à ... la plus biodisponible actuellement sur le marché, elle ... approuvés par les règlements européens. La ... racine de curcuma ( Curcuma longa ) qui ...
(Date:11/26/2014)... 25 novembre 2014 /PRNewswrie/ -- Theravalues Corporation annuncia con ... europeo in occasione di Hi Europe 2014 (dal 2 ... Si tratta della curcumina con la maggiore biodisponibilità ... cristalli) e ingredienti approvati dalle norme europee. ... della pianta curcumina ( Curcuma longa ) che è ...
Breaking Biology Technology:Miles Holder Joins Graphel Corporation as Sales/Marketing Manager 2CURE Magazine and Incyte to Honor MPN Heroes 2CURE Magazine and Incyte to Honor MPN Heroes 3CURE Magazine and Incyte to Honor MPN Heroes 4La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 2La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 3La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 2La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 3
... year, and I have talked less about music this year than ... is bring back more music (hopefully something blue, rock, or folk-related). ... to as many concerts this past year, or bought many new ... 2006, my focus has been more on biotech's international side and ...
... get the first spot on Google , Yahoo ... was the highest bid. Today, even the experts aren't sure ... continue to update their pay-per click (PPC) infrastructures to increase ... ranking for ads promoting link farms and other sites without ...
... Madison, Wis. - The nation's space agency announced this month ... long enough to pack for the longer trip to Mars ... should bypass the Earth's lifeless satellite and head directly ... Still others say the government should get out of the business ...
Cached Biology Technology:2006: A great biotech financing year, unless you were going public! 22006: A great biotech financing year, unless you were going public! 32006: A great biotech financing year, unless you were going public! 42006: A great biotech financing year, unless you were going public! 5It takes more than money to reach the top 2It takes more than money to reach the top 3It takes more than money to reach the top 4Flying to the moon? Take Wisconsin tech along 2Flying to the moon? Take Wisconsin tech along 3Flying to the moon? Take Wisconsin tech along 4
...
...
... This antibody recognizes murine IRF7 ... with other related IRF proteins. ... murine IRF7 protein was confirmed ... the 293T cells transfected with ...
...
Biology Products: