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:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Apple ... care services, staged a mock evacuation of the facility as part of a disaster ... Fire Department, Echo Hose EMS and Shelton City Emergency Manager, as well as the ...
(Date:10/13/2017)... , ... October 13, 2017 , ... Global Healthcare Management’s ... Alexandria Park in Milford, NJ. This free event, sponsored by Global Healthcare Management’s ... The fun run is geared towards children of all ages; it is a ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the ... danger possible to save lost souls in the Philippines. “The Journey: From the Mountains ... a dedicated teacher of the Bible. She has taught all ages and currently teaches ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest and ... plans to open a flagship location in Covington, LA at 401 N. U.S. Highway ... store next to Office Depot in the Holiday Square shopping center. Its location allows ...
(Date:10/12/2017)... ... 2017 , ... Asante, a nationally recognized health system in ... existing home health joint venture through an agreement, effective October 1, 2017, to ... home health company with Asante, delivering clinically integrated care, for the past eight ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)... -- NDS received FDA 510(k) clearance in May 2017 for its highly ... designed for endoscopy environments. An innovative secondary monitor solution, ZeroWire ... support the improvement of patient outcomes, procedural efficiency, and the lowering ... ... ...
(Date:10/4/2017)... 4, 2017  South Korean-based healthcare product Development Company ... "cprCUBE" on Kickstarter. The device will educate the user ... with better efficiency compared to the dated and pricey ... on efficacy of the compression for a more informed ... goal to raise $5,000. ...
(Date:10/2/2017)... 2017  Eli Lilly and Company (NYSE: ... third quarter of 2017 on Tuesday, October 24, 2017. ... day with the investment community and media to further ... call will begin at 9 a.m. Eastern time. Investors, ... webcast of the conference call through a link that ...
Breaking Medicine Technology: