Navigation Links
Has evolution given humans unique brain structures?
Date:2/22/2013

Our ancestors evolutionarily split from those of rhesus monkeys about 25 million years ago. Since then, brain areas have been added, have disappeared or have changed in function. This raises the question, 'Has evolution given humans unique brain structures?'. Scientists have entertained the idea before but conclusive evidence was lacking. By combining different research methods, we now have a first piece of evidence that could prove that humans have unique cortical brain networks.

Professor Vanduffel explains: "We did functional brain scans in humans and rhesus monkeys at rest and while watching a movie to compare both the place and the function of cortical brain networks. Even at rest, the brain is very active. Different brain areas that are active simultaneously during rest form so-called 'resting state' networks. For the most part, these resting state networks in humans and monkeys are surprisingly similar, but we found two networks unique to humans and one unique network in the monkey."

"When watching a movie, the cortex processes an enormous amount of visual and auditory information. The human-specific resting state networks react to this stimulation in a totally different way than any part of the monkey brain. This means that they also have a different function than any of the resting state networks found in the monkey. In other words, brain structures that are unique in humans are anatomically absent in the monkey and there no other brain structures in the monkey that have an analogous function. Our unique brain areas are primarily located high at the back and at the front of the cortex and are probably related to specific human cognitive abilities, such as human-specific intelligence."

The study used fMRI (functional Magnetic Resonance Imaging) scans to visualise brain activity. fMRI scans map functional activity in the brain by detecting changes in blood flow. The oxygen content and the amount of blood in a given brain area vary according to a particular task, thus allowing activity to be tracked.


'/>"/>

Contact: Wim Vanduffel
wim.vanduffel@med.kuleuven.be
32-016-330-666
KU Leuven
Source:Eurekalert

Related medicine news :

1. Males superior spatial ability likely is not an evolutionary adaptation
2. Pulitzer Prize Winner, Chief Experience Officer, to Keynote Patient Safety Solution Evolution
3. Study tracks leukemias genetic evolution, may help predict disease course, tailor care
4. New Sleep Mask for Perfect Sleep: Zeepo, the Revolutionary Strapless Eye Mask that Completely Blocks Out Light
5. Evolution Keratin Strikes Exclusive Deal With Proline Beauty Distributors
6. LifeWings Provides 7 Steps to Revolutionize Patient Safety Management
7. simplifyMD Revolutionizes the EHR Software Trial Process with the introduction of simpleStart™
8. Breakthrough HIV Technology Could Revolutionize Patient Care in Zimbabwe
9. A new mechanism that contributes to the evolution of cancer
10. Rutgers professor recognized for revolutionizing agriculture
11. Economic analysis finds penicillin, not "the pill," may have launched the sexual revolution
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/9/2016)... ... February 09, 2016 , ... ... Elder-Beerman, Herberger’s and Younkers department stores, announced it has raised $176,000 to benefit ... Center, Holden Comprehensive Cancer Center at the University of Iowa, The Lynn Sage ...
(Date:2/9/2016)... ... 09, 2016 , ... METTLER TOLEDO has published a new ... basic understanding of the techniques they use so they can more easily spot ... waste and rework to create a leaner overall lab experience. , The ...
(Date:2/9/2016)... ... 2016 , ... United Methodist Communications collaborated with Chocolate Moose ... video designed to prevent the next widespread Ebola outbreak from occurring ... distributed throughout Togo, Liberia, Sierra Leone, Nigeria, Côte d’Ivoire and other African countries, ...
(Date:2/9/2016)... Petersburg, FL (PRWEB) , ... February 09, 2016 , ... Shark Finds and ... a new DRTV campaign with GRIP-DRY. , GRIP-DRY is a newly patented product that has ... Golfers who play in the wet and early morning dew or right after a rain ...
(Date:2/8/2016)... ... February 08, 2016 , ... The Federal Laboratory ... federallabs.org . The site houses a wealth of federal resources that businesses can ... process called technology transfer (T2). As a network of over 300 federal laboratories, ...
Breaking Medicine News(10 mins):
(Date:2/9/2016)... , Feb. 9, 2016  Increasingly, health care ... their vital signs with wireless technology. With the Vios ... automate patient oversight and remotely detect problems before they ... signs across in-hospital environments. the United ... United States . --> The ...
(Date:2/9/2016)... Feb. 9, 2016 The new report " Global Fetal ... Spearhead Acuity Business Research & Consulting group reveals that ... market with a share of 36.4% in 2014 that translated into ... , the report also covers market analysis for Fetal and Neonatal ... , Asia-Pacific , Latin America ...
(Date:2/9/2016)... , Feb. 9, 2016  Bluestar Silicones will promote ... line for long-term implant applications and announce certification ... & Manufacturing (MD&M) West Conference (Booth #1759), February ... --> --> Available in ... LSRs offer outstanding physical properties enabling our customers ...
Breaking Medicine Technology: