Navigation Links
Human working memory is based on dynamic interaction networks in the brain
Date:4/13/2010

A research project of the Neuroscience Center of the University of Helsinki sheds light on the neuronal mechanisms sustaining memory traces of visual stimuli in the human brain. The results show that the maintenance of working memory is associated with synchronisation of neurons, which facilitates communication between different parts of the brain. On the basis of interaction between the brain areas, it was even possible to predict the subject's individual working memory capacity. The results were published last week in the online version of the renowned journal PNAS.

The working memory of an average person can sustain only three of four objects at a time. The brain areas maintaining the working memory are known well, but there is little information about how these areas interact. The research group led by Satu and Matias Palva imaged the brain activity of subjects performing working memory tasks by using magneto- and electroencephalography (MEG and EEG). In addition to this, they developed a new method for using MEG and EEG data to identify networks of fast neuronal interactions, i.e., synchrony, between different areas of the cerebral cortex. With this novel approach, it was possible to reveal functional networks formed by brain areas at the accuracy of milliseconds.

Maintaining of a memory trace synchronised different brain areas

In their study, the researchers mapped almost four billion different neuronal interactions. They were especially interested in rhythmic interactions between different parts of the brain. While sustaining the working memory of visual stimuli, the rhythmic activity of the subject's different brain areas were transiently synchronised. The results reveal that the synchronisation of neuronal activity in different brain areas had a connection both to the maintenance and to the contents of working memory.

The study also revealed several specialized function-specific networks and interactions between them. The network comprising different areas of the brain's frontal and parietal lobes played a central role. These areas are responsible for the coordination of attention and action. The networks in the occipital lobe, on the other hand, handle and maintain the sensory information about the visual stimuli.

Working memory and attention are the cornerstones of our cognition and consciousness knowledge about their underlying neuronal mechanisms can be applied, for example, when developing therapeutic and diagnostic methods for Alzheimer's disease, dementia, schizophrenia, perception and learning disorders, autism and other brain diseases.


'/>"/>

Contact: Matias Palva
matias.palva@helsinki.fi
358-919-157-613
University of Helsinki
Source:Eurekalert

Related medicine news :

1. Magnetic field measurements of the human heart at room temperature
2. UCSF Researchers Identify Regulator of Human Sperm Cells
3. Adventurer Sets Sea Trial for World Record Human-Powered Ocean Crossing from Canada to Hawaii
4. PeopleStreme Human Capital Releases 'New Trends in Performance Management - 2010' Whitepaper
5. UNFPA Honoured With Human Rights Award
6. Human Rights Denied: Obama Leaves 75 Million Children Behind
7. OnlineEducation.com Announces Expansion of Liberal Arts & Humanities to its Accredited Online Degree Programs
8. Obama Proposes $911 Billion for Health and Human Services
9. Human Touch Introduces New CirQlation™ Elite Foot & Calf Massager Providing Ultimate Targeted Relief for Tired Feet and Calves
10. Human Touch Unveils HT-Connect™, the First Personalized Wellness Solution Wirelessly Connecting Human Touch Massage Chairs with iPhone and iPod Touch
11. Israel Flying Aid Humanitarian Volunteers Confront Children Suffering In Haiti
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/26/2017)... ... May 26, 2017 , ... Somnoware, a leading provider of ... with its Somnoware Sleep Device Interface (SDI). Somnoware SDI is a sleep device ... this platform, initializing devices and importing studies are just one-click operations. This plugin ...
(Date:5/26/2017)... ... May 26, 2017 , ... ... is sharing bold recipes for Memorial Day entertaining that are sure to satisfy ... “Boar’s Head fresh sliced meats and cheeses featured in these refreshingly balanced recipes ...
(Date:5/26/2017)... BOSTON, MA (PRWEB) , ... May 26, 2017 , ... ... Care Act (AHCA), which narrowly passed the U.S. House on May 4, would result ... would be expected under continued implementation of the 2010 Patient Protection and Affordable Care ...
(Date:5/26/2017)... ... May 26, 2017 , ... Yisrayl Hawkins, Pastor and Overseer ... week that is focusing on the Peace Agreements being discussed by President Donald Trump ... in a race to try to speed up peace talks in the continuous battle ...
(Date:5/26/2017)... ... ... Rob Lowe acts as host and helps educate and inform the public using ... Viewers can reconnect with America as it explores some of the best places to ... for an inventive new place for a family vacation, and have discovered hiking. Many ...
Breaking Medicine News(10 mins):
(Date:5/18/2017)... 17, 2017  Bayer announced today that the latest ... presented at the 53 rd Annual Meeting of ... June 2-6 in Chicago . ... prostate, colorectal, liver and thyroid cancers, as well as ... II CHRONOS-1 trial of copanlisib in patients with relapsed ...
(Date:5/15/2017)... Inc., a privately-held CNS pharmaceutical company based in ... disease (PD), has enrolled the first patient in the RASMET ... study involving patients with PD and taking place at 12 ... period. The first stage is open label and involves single ... Denver , Boca Raton ...
(Date:5/11/2017)... 11, 2017  Thornhill Research Inc. ( ... an $8,049,024 USD five-year, firm-fixed-priced, indefinite-quantity/indefinite-delivery contract by ... Commercial Corporation (CCC) ( Ottawa, Ontario, Canada ... administer general anesthesia to patients requiring emergency medical ... US Marine Corps have been a longtime partner ...
Breaking Medicine Technology: