Navigation Links
Computer simulations explain the limitations of working memory
Date:3/31/2009

[PRESS RELEASE, 31 March 2009] Researchers at the Swedish medical university Karolinska Institutet (KI) have constructed a mathematical activity model of the brain's frontal and parietal parts, to increase the understanding of the capacity of the working memory and of how the billions of neurons in the brain interact. One of the findings they have made with this 'model brain' is a mechanism in the brain's neuronal network that restricts the number of items we can normally store in our working memories at any one time to around two to seven.

Working memory, which is our ability to retain and process information over short periods of time, is essential to most cognitive processes, such as thinking, language and planning. It has long been known that the working memory is subject to limitations, as we can only manage to "juggle" a certain number of mnemonic items at any one time. Functional magnetic resonance imagery (fMRI) has revealed that the frontal and parietal lobes are activated when a sequence of two pictures is to be retained briefly in visual working memory. However, just how the nerve cells work together to handle this task has remained a mystery.

The study, which is published in the journal PNAS, is based on a multidisciplinary project co-run by two research teams at KI led by professors Torkel Klingberg and Jesper Tegnr. Most of the work was conducted by doctors Fredrik Edin and Albert Compte, the latter of whom is currently principal investigator of the theoretical neurobiology group at IDIBAPS in Barcelona.

For their project, the researchers used techniques from different scientific fields, applying them to previously known data on how nerve cells and their synapses function biochemically and electrophysiologically. They then developed, using mathematical tools, a form of virtual or computer simulated model brain. The computations carried out with this 'model brain' were tested using fMRI experiments, which al
'/>"/>

Contact: Katarina Sternudd
katarina.sternudd@ki.se
46-852-483-895
Karolinska Institutet
Source:Eurekalert

Page: 1 2

Related biology news :

1. Computer superpower strengthens attempts to combat common diseases
2. New open-source software permits faster desktop computer simulations of molecular motion
3. Lifecycles of tropical cyclones predicted in global computer model
4. Singapore research team first place in Brain-Computer Interface contest
5. ORNL supercomputer simulation wins prize for fastest-running science application
6. Oak Ridge supercomputer is the worlds fastest for science
7. Supercomputer provides massive computational boost to biomedical research at TGen
8. Could Dr. House be replaced by a computer?
9. San Diego Supercomputer Center and UCSD announce Triton Resource
10. New data resource to advance computer-aided drug design
11. Coming soon: Self-guided, computer-based depression treatment
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/27/2015)... April 27, 2015  For more than four decades, ... has been the premier worldwide event for the unmanned ... a must-attend event for any local, national, or trade ... emerging commercial markets and current applications of unmanned technologies. ... this projected $48 billion industry, and how it will ...
(Date:4/27/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... on the growing mobile commerce market, announces that its ... the first week of May, 2015 and will be ... Gino Pereira , Chief Executive ... company as Wocket® enters the consumer market. We would ...
(Date:4/27/2015)... Apr. 27, 2015 Profile Solutions, Inc. (OTC: ... security systems is pleased to announce that Dr ... consultant and member of its scientific advisory board. ... as a thought leader in technology-enhanced learning models. He ... and has published studies and books focused on online ...
Breaking Biology News(10 mins):UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4
... of Standards and Technology (NIST) will no longer provide ... mercury thermometer calibration program marks the end of an ... the doors opened in 1901. The closing of the ... with the U.S. Environmental Protection Agency (EPA) and a ...
... French . Clostridium difficile ... and other health care facilities, but no new drugs to ... a large-scale, phase 3 trial conducted by Canadian and U.S. ... existing treatments, demonstrating a 45 percent reduction in recurrences vs. ...
... , This release is available in German . ... and is extremely precise: within a few seconds, a laser beam ... screws, clamps or glues whatsoever. The result is a perfect weld ... or particles flying through the air during welding. What,s more: the ...
Cached Biology News:End of an era: NIST to cease calibrating mercury thermometers 2First new C. difficile drug in a generation superior to existing treatments: Researchers 2Laser welding in the right light 2
(Date:4/28/2015)... COPENHAGEN, Denmark , April 28, 2015  DanDrit ... a biotechnology company developing a vaccine for the treatment ... has signed a final collaboration agreement with GISCAD Foundation, ... digestive tract cancer studies. The collaboration relates ... vaccine, in patients with no evidence of disease (NED) ...
(Date:4/28/2015)... ANN ARBOR, Mich. , April 28, 2015 ... OncoTargets and Therapy today shows that the Paradigm ... FoundationOne test across a number of key clinical variables, ... The purpose of the analysis was to ... for profiling cancer patients compared with each other.  ...
(Date:4/28/2015)... uBiome, Inc. has announced the ... clinical tests based on its unique microbial assays. ... sparked the era of microbiome-based personalized medicine by ... information about their own bodies using the latest ... uBiome has gathered millions of data points in ...
(Date:4/28/2015)... According to a 2013 report from ... medical treatment from burn injuries per year. Despite several ... formation of scars with subsequent contractures remains a major ... there is no adequate treatment. Contractures are a permanent ... can cause permanent deformity. , Synedgen has developed ...
Breaking Biology Technology:DanDrit Biotech USA, Inc. Announces Final Collaboration Agreement with the GISCAD Foundation 2DanDrit Biotech USA, Inc. Announces Final Collaboration Agreement with the GISCAD Foundation 3DanDrit Biotech USA, Inc. Announces Final Collaboration Agreement with the GISCAD Foundation 4Paradigm Cancer Diagnostic Test (PCDx) Performed Better Than FoundationOne In Side by Side Clinical Study 2Paradigm Cancer Diagnostic Test (PCDx) Performed Better Than FoundationOne In Side by Side Clinical Study 3uBiome Launches Clinical Laboratory 2Synedgen Burn Treatment Results Presented at Premier Wound Conference 2Synedgen Burn Treatment Results Presented at Premier Wound Conference 3
... at American Society of Pharmacognosy, EMERYVILLE, Calif., ... will present seminal information on a new drug ... 7th Annual Oxford International,Conference on the Science of ... April 12-16, 2008. Scott Baggett, Ph.D., a member ...
... April 14 Codexis, Inc. announced,today that it has ... U.S.,Securities and Exchange Commission ("SEC") relating to the proposed ... of the Codexis,registration statement on Form S-1 can be ... shares being offered and the price,range for the offering ...
... and reduced cost for ... pharmaceutical manufacturers, NEW YORK, ... agreement with Chiral Quest, Inc., a manufacturer and,developer of chiral ... chiral products to the pharmaceutical industry., Effective immediately, Sumitomo ...
Cached Biology Technology:Bionovo Identifies and Describes ER-beta Selective Compounds for the Treatment of Vaginal Dryness 2Bionovo Identifies and Describes ER-beta Selective Compounds for the Treatment of Vaginal Dryness 3Codexis, Inc. Files Registration Statement for Proposed Initial Public Offering 2Sumitomo Corporation of America Named Exclusive Distribution and Sales Agent for Chiral Quest 2
... Neurotransmitters are stored within neurons ... are concentrated in the synaptic bouton. ... isolated from other cellular ... been proposed in many pathological condtions. ...
... CLS number is a ... to easily match Cornings ... no availability yet, please ... Sigma-Aldrich number (Z71,515-8) or ...
... the value of your microarray data ... the support you need from consultation ... most up to date methods. Utilize ... Gene Expression Profiling Service or from ...
... CLS number is a new ... match Cornings product number. If ... order under the old Sigma-Aldrich ... service for assistance. Material: ...
Biology Products: