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:7/31/2015)... 31 juillet 2015 La 10e Conférence ... sera organisée par le BGI du 22 au ... en Chine. La conférence célèbre ... en 2006, l,ICG est devenue l,une des réunions ... des « omiques » et c,est aussi la plus dynamique, ...
(Date:7/31/2015)... Jul. 31, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market and creator ... filed provisional patent 62/198989 for ELECTRONIC CRYPTO-CURRENCY ... a method to advance crypto-currencies such as Bitcoin into ... common, uniform way to manage all payments.  ...
(Date:7/27/2015)... Calif. , July 27, 2015  Synaptics ... of human interface solutions, today announced that Huawei ... touchscreen solution for its stylish smartwatch. Huawei ... its proven reliability, low power and highly responsive ... wet finger. Huawei designers also required a classic ...
Breaking Biology News(10 mins):La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 2La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 3NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3
... two-dozen countries have signed a consensus statement on the ... as the most serious and pervasive include overfishing, pollution, ... "This is first time the scientific ... express urgency over the environmental crisis facing the Pacific ...
... feeding frenzy that played out 73 million years ago ... of new dinosaur species in northwestern Alberta. University ... paleontology graduate student from Italy, made the discovery near ... Miyashita and Fanti came across a nesting site and ...
... Rare traits persist in a population because predators detect common ... access journal BMC Ecology found that birds will ... their behavior in response to alterations in the ratio of ... of Tennessee, worked with Kim Shook and Reuben Izally to ...
Cached Biology News:Scientists urge world leaders to respond cooperatively to Pacific Ocean threats 2New dinosaur species possible in Northwestern Alberta 2
(Date:7/31/2015)... -- China Cord Blood Corporation (NYSE: CO) ("CCBC" or ... of cord blood collection, laboratory testing, hematopoietic stem cell ... the Company has filed its Annual Report on Form ... filed Form 20-F includes audited financial statements for the ... can be accessed by visiting the U.S. Securities and ...
(Date:7/30/2015)... CAMBRIDGE, Mass. , July 30, 2015 /PRNewswire/ ... software solutions for the interpretation and analysis of ... Matthew Fischer has joined the company ... Photo - http://photos.prnewswire.com/prnh/20150730/250931 ... astounding capabilities to integrate, interpret, analyze and explore ...
(Date:7/30/2015)... ... July 30, 2015 , ... ... field clinical study of its canine osteoarthritis stem cell product, currently under development ... City, KS) and will be marketed in the US by Aratana. This product, ...
(Date:7/30/2015)... Ascendis Pharma A/S (Nasdaq: ASND ... TransCon technology to address significant unmet medical needs, ... Phase 2 study to evaluate the safety and ... treatment-naïve, pre-pubertal children with growth hormone deficiency, or ... the top-line results from our Phase 2 pediatric ...
Breaking Biology Technology:China Cord Blood Corporation Files Its Annual Report on Form 20-F 2GenoSpace Introduces Matthew Fischer as Vice President of Sales and Marketing 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7
... hurdle using Star-P, WALTHAM, Mass., Feb. ... Architecture Research Lab (NUCAR) and the National,Science ... Imaging,Systems (CenSSIS) are teaming with Massachusetts General ... detection technology that improves breast,cancer screening accuracy. ...
... (Nasdaq: NPSP ) announced today that Dr. Tony ... chief executive,officer and a director effective March 17, 2008 ... Onyx Pharmaceuticals, Inc. (Nasdaq:,ONXX). He will be succeeded by ... Nader, who will become president and chief,executive officer of ...
... (OTC,Bulletin Board: SNKTY), a Life Sciences company engaged in ... aging, today announced,that results of a clinical study of ... Journal of Drugs in Dermatology., The study was ... over 12 weeks for improving the baseline clinical,signs and ...
Cached Biology Technology:Northeastern University and Mass General Hospital Increase the Accuracy, While Reducing the Diagnosis Time, for Breast Cancer Detection 2Northeastern University and Mass General Hospital Increase the Accuracy, While Reducing the Diagnosis Time, for Breast Cancer Detection 3NPS Pharmaceuticals Announces Senior Management Changes 2NPS Pharmaceuticals Announces Senior Management Changes 3Pyratine-6(TM) Study Published in Journal of Drugs in Dermatology 2Pyratine-6(TM) Study Published in Journal of Drugs in Dermatology 3
The LIC Duet™ Mini Adaptor encodes a T7 promoter, lac operator, ribosome binding site (rbs), and an ATG translation initation codon. This adaptor is designed for expression of a target protei...
... scale-up, these culture chambers produce cell yields ... range and are useful alternatives to ... High mechanical • strength and structural integrity ... • Certified nonpyrogenic and sterilized by gamma ...
ABgene® supplies a 94kDa ultra-pure recombinant thermostable DNA polymerase obtained by high level expression of the Taq DNA polymerase gene in E. coli....
...
Biology Products: