HOME >> BIOLOGY >> NEWS
Chimpanzee brains are asymmetrical in key areas and their handedness reflects it

WASHINGTON -- New MRI-based studies present more evidence that the brains of chimpanzees are human-like in terms of the relationships among brain asymmetry, handedness and language, according to research undertaken at the Yerkes National Primate Research Center in Atlanta. Understanding our evolutionary cousins helps us to understand what makes us human. Two related reports appear in the December issue of Behavioral Neuroscience, which is published by the American Psychological Association (APA).

In the first study, Hani Freeman, BA, Claudio Catalupo, PhD (also with Georgia State University), and William Hopkins, PhD (also with Berry College), took magnetic resonance images of 60 chimpanzees to measure the anatomy of two key structures in their brains' limbic systems, an early-evolving central region that includes the hippocampus and amygdala. In the MRI pictures, the hippocampus (which regulates learning and consolidation of spatial memory, mood, appetite and sleep) was asymmetrical, its right half significantly larger than its left. This asymmetry was bigger in males. These findings are consistent with studies of human hippocampi, which are also asymmetrical. At the same time, just as in humans, the amygdalas of the chimps were symmetrical.

Studies such as this confirm that human and chimp brains are not only asymmetrical, but asymmetrical in the same way. The findings echo previous looks at the non-limbic parts of chimpanzee brains, which also appear human-like in their patterns of asymmetry. This fact, especially if studied in the context of functional behaviors that reflect asymmetries, may help scientists get a better fix on the evolution of the limbic system in all primates, including humans.

Says Hopkins, "The limbic system asymmetries advance the position that asymmetries are fundamental aspects of the nervous system of all primates, and apply to more primitive systems in the brain." The asymmetries influence beha
'"/>

Contact: Pam Willenz
public.affairs@apa.org
202-336-5700
American Psychological Association
5-Dec-2004


Page: 1 2 3

Related biology news :

1. Chimpanzees found to use tools to hunt mammalian prey
2. Chimpanzees can transmit cultural behavior to multiple generations
3. Chimpanzee study reveals genome variation hotspots
4. Chimpanzee cooperators
5. Chimpanzees are social conformists
6. Chimpanzees show quality of relationship drives sense of fairness
7. Chimpanzee workshop discovered in Congo
8. Virtual mouse brains now available online
9. Modern brains have an ancient core
10. Different approach needed to protect brains of premature infants
11. 2 brains -- 1 thought

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


(Date:8/21/2020)... ... August 19, 2020 , ... ... expo uniting life science, data science, informatics and IT leaders goes VIRTUAL and ... period of uncertainty and change, Bio-IT takes the leadership role of keeping our ...
(Date:8/7/2020)... , ... August 06, 2020 , ... ... participate in the prestigious National STEM Scholar Program, a unique professional development program ... and project support for middle school science teachers nationwide. , Created in partnership ...
(Date:7/22/2020)... ... July 21, 2020 , ... USDM Life Sciences ... compliance, announces a new solution to manage regulated workloads on Microsoft Azure. , ... technology stack complies with FDA and global regulations. USDM's new managed service for ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... HONG KONG (PRWEB) , ... July 09, 2020 ... ... chemical compound called 1-phenyl-2-thiourea (PTU) is commonly used to suppress pigment formation in ... years, the PolyU research team led by Dr MA has been using the ...
(Date:7/7/2020)... ... July 06, 2020 , ... Bio-IT World has announced ... Bristol-Myers Squibb, the University of Chicago, Massachusetts General Hospital, Mission: Cure, and the ... awards program, highlighting outstanding examples of how technology innovations and strategic initiatives can ...
(Date:7/1/2020)... Colo. (PRWEB) , ... June ... ... of expert tissue data insights, today announced that the launch of a ... results along with data about the tumor microenvironment (TME). , “Flagship’s TissueInsight ...
(Date:6/28/2020)... (PRWEB) , ... June 25, 2020 , ... ... to advance photodynamic therapy for treating cancer, today announced the company has entered ... (“Roswell Park”). The agreement provides Lumeda globally exclusive rights to Roswell Park ...
Breaking Biology Technology:
Cached News: