Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New methods for brain research

10.12.2002


Novel methods of measuring magnetic fields outside the head give further insights to the functioning of the human brain. In his doctoral thesis “Estimating Neural Currents from Neuromagnetic Measurements”, Kimmo Uutela developed new methods for finding electrical activity of the brain, which enable easier identification of different brain areas. The Finnish Association of Graduate Engineers (TEK) and the Engineering Society in Finland (TFiF) honoured Uutela’s work with their joint doctoral thesis award.



Uutela developed two methods, based on magnetic measurements, for estimating electric activity of the brain. Research was carried out at the Low Temperature Laboratory of Helsinki University of Technology. One method is a multidipole model applying genetic algorithms and the other is a minimum current estimate method. These mathematical methods make it easier to locate brain areas which operate simultaneously, and are useful tools for research purposes as well as for the planning of neurosurgery, for example.

“Both estimation methods are automatic making the source estimation faster and less subjective,” explains Uutela. “Also, the results of the minimum current estimate are in a format that can be easily combined with results of other brain imaging modalities and over different subjects.”


Errors caused by head movements can be corrected using a third method which records movements of the head during measuring, and uses this information to amend estimations of the neural currents. “The head movement correction enables accurate measurements on subjects that do not keep still during the experiment, especially children,” notes Uutela. The correction method, useful in research as well as in pediatric clinical studies, has been developed in collaboration with the Finnish company Neuromag Ltd, but is not yet commercially available.

Mira Banerjee-Rantala | alfa
Further information:
http://www.tekes.fi

More articles from Health and Medicine:

nachricht Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University

nachricht Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>