Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

'Wiring' in the Brain Influences Personality

24.11.2008
Some people are constantly seeking a new kick; some prefer to stick to tried and tested things. Which group you belong to seems to be connected, inter alia, with the 'wiring' of specific centres of the brain.

This was discovered by scientists at the University of Bonn using a new method. Even how much acceptance people seek is apparently also determined by nerve fibres in the brain. The study will appear in the next issue of the journal Nature Neuroscience (doi: 10.1038/nn.2228).

Have you got the new iPhone yet? Do you like changing jobs now and again because you get bored otherwise? Do you go on holiday to different places every year? Then maybe your neural connection between ventral striatum and hippocampus is particularly well developed. Both of them are centres in the brain. The reward system which urges us to take action is located in the striatum, whereas the hippocampus is responsible for specific memory functions.

In innovation-oriented people, both of these centres apparently interact particularly well. At least this is the supposition of the scientists from Bonn, Michael X. Cohen and Dr. Bernd Weber. If the hippocampus identifies an experience as new, it then sends the correspond-ing feedback to the striatum. There certain neurotransmitters are then released which lead to positive feelings. With people who constantly seek new experiences, striatum and hippocampus are evidently wired particularly well. The two researchers were able to show this in the survey now being published.

Method revolutionises the exploration of the brain

Up to now, it has been extremely difficult to make the individual 'wiring' of the brain visible. 'In principle this was only possible using cross sections of the brain of deceased people, which in addition had to be stained in a complex process,' Dr. Weber explains. Thanks to a new method this is now a lot easier. With modern MRI you can actually determine in which directions the water in the tissue diffuses. Nerve fibres are an impenetrable obstacle for tissue fluid. It can only flow along them. These 'directional' streams of water are visible in the tomography image. 'With this hazard-free method we can work on completely new issues related to the function of the brain,' Cohen says enthusiastically.

In the current study the Bonn scientists focused on the 'wiring' of the striatum. Moreover, the test candidates had to choose descriptions that characterised their personality best from a questionnaire, e.g. 'I like to try out new things just for fun or because it’s a challenge' or alternatively 'I prefer to stay at home rather than travelling or investigating new things.'

By contrast, descriptions such as 'I want to please other people as much as possible' or 'I don't care whether other people like me or the way I do things', were about social accept-ance. Here too the researchers noticed a link. 'The stronger the connection between frontal lobe and ventral striatum, the more distinctive the desire for recognition by that person’s environment,' Weber says. That is not quite unexpected. For example, it is known that people with defects of the frontal lobe violate social norms more frequently.

The Bonn scientists wish to confirm their results even more. In experiments they would like to investigate whether people actually behave differently depending on the 'wiring' of their brain.

Dr. Bernd Weber | alfa
Further information:
http://www.ucdavis.edu
http://www.lifeandbrain.com
http://www.uni-bonn.de

More articles from Health and Medicine:

nachricht New vaccine production could improve flu shot accuracy
25.07.2017 | Duke University

nachricht Chances to treat childhood dementia
24.07.2017 | Julius-Maximilians-Universität Würzburg

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: Carbon Nanotubes Turn Electrical Current into Light-emitting Quasi-particles

Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers

Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...

Im Focus: Flexible proximity sensor creates smart surfaces

Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.

At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...

Im Focus: 3-D scanning with water

3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects

A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA mission surfs through waves in space to understand space weather

25.07.2017 | Physics and Astronomy

Strength of tectonic plates may explain shape of the Tibetan Plateau, study finds

25.07.2017 | Earth Sciences

The dense vessel network regulates formation of thrombocytes in the bone marrow

25.07.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>