HOME >> BIOLOGY >> NEWS
A sharper look at the brain

Thanks to a dramatic improvement in imaging techniques it is now possible to generate high-resolution pictures of the monkey brain in a quality never seen before. A research group led by neurophysiologist Prof. Nikos Logothetis of the Max Planck Institute for Biological Cybernetics and physician Prof. Dr. Heinz Guggenberger of the Eberhard Karl University (both in Tübingen, Germany) was the first ever to successfully use the so-called fMRI technique (from functional magnetic resonance imaging) to produce detailed pictures of active brain regions in monkeys which have been anesthetized but are still capable of perception (nature neuroscience, Vol. 2, No. 6, June 1999). Until now, many scientists were convinced that it would be impossible to gather such images from anesthetized monkeys.

The fMRI technique uses a strong magnetic field to detect brain regions which are active and thus more strongly perfused. It promises new impetus for the area of brain research. fMRI makes it possible to pinpoint the precise regions of the monkey's visual cortex (that region of the cerebral cortex responsible for sight) where optical stimuli are processed. The non-invasive measurements are carried out under anesthesia conditions that meet the most up-to-date standards in human clinical medicine. The eyelids are held open artificially so the animals can see the presented test pattern. At the same time, constant irrigation prevents any damage to the eyes. The monkey wakes up and is fully conscious an average of 15 minutes after the experiment. The new technique places much less strain on the animal than conventional methods and makes it unnecessary to put them to sleep after the experiment.

The improved method made it possible to visualize brain volumes as small as 0.5 microliters in anesthetized monkeys and 2 microliters in a control group of alert monkeys. (One microliter is one millionth of a liter.) This is the highest resolution ever achieved in pictures of the pri
'"/>

Contact: Nikos K. Logothetis
nikos.logothetis@tuebingen.mpg.de
49-70-71-6-01-6
Max-Planck-Gesellschaft
4-Jun-1999


Page: 1 2 3

Related biology news :

1. Gene chips bring new order to lung cancer types, could yield sharper diagnoses, better drugs
2. Trial shows which brain cancer patients benefit from temozolomide
3. Targeted therapy knocks out pediatric brain cancer in mice
4. New way to protect brain from stroke damage
5. Chemical signals health of brain cells Symposium
6. DHA-rich diet protects brain from Alzheimers damage, UCLA study shows
7. Decreasing toxins in brains of Alzheimers patients keep cognitive deficits at bay
8. Genetic clues found for common congenital brain disorder
9. Marijuana ingredient inhibits VEGF pathway required for brain tumor blood vessels
10. Molecular therapeutics advance fight against brain cancer
11. Depression traced to overactive brain circuit

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/2/2016)...   The Weather Company , an IBM Business (NYSE: ... capability in which consumers will be able to interact with ... via voice or text and receive relevant information about the ... Marketers have long sought an advertising solution that can create ... relevant and valuable; and can scale across millions of interactions ...
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
(Date:4/28/2016)... First quarter 2016:   , ... the first quarter of 2015 The gross margin was ... 18.8) and the operating margin was 40% (-13) Earnings ... flow from operations was SEK 249.9 M (21.2) , ... SEK 7,000-8,500 M. The operating margin for 2016 is ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016 /PRNewswire/ - FACIT has announced the ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or ... of a portfolio of first-in-class WDR5 inhibitors for ... as WDR5 represent an exciting class of therapies, ... medicine for cancer patients. Substantial advances have been ...
(Date:6/23/2016)... , June 23, 2016 Houston ... with the Cy-Fair Sports Association to serve as ... the agreement, Houston Methodist Willowbrook will provide sponsorship ... and connectivity with association coaches, volunteers, athletes and ... with the Cy-Fair Sports Association and to bring ...
(Date:6/23/2016)... June 23, 2016  The Prostate Cancer Foundation (PCF) is pleased ... and faster cures for prostate cancer. Members of the Class of 2016 were ... Read More About the Class of 2016 PCF Young ... ... ...
(Date:6/23/2016)...   EpiBiome , a precision microbiome engineering company, ... financing from Silicon Valley Bank (SVB). The financing will ... its drug development efforts, as well as purchase additional ... has been an incredible strategic partner to us – ... would provide," said Dr. Aeron Tynes Hammack , ...
Breaking Biology Technology:
Cached News: