Navigation Links
Influence of sex and handedness on brain is similar in capuchin monkeys and humans

Hiram, Ohio, August 29, 2007 Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. New research now shows that just like humans, they display a fundamental sex difference in the organization of the brain, specifically in the corpus callosum, the region that connects the two cerebral lobes.

A recently published paper by Associate Professor of Psychology and Biology Kimberley A. Phillips (Hiram College), Chet C. Sherwood (George Washington University) and Alayna L. Lilak (Hiram College), reports finding both sex and handedness influences on the relative size of the corpus callosum. The researchers contribution appears in PLoS ONE, the online, open-access journal of the Public Library of Science. The paper can be read at:

In the study, thirteen adult capuchins underwent magnetic resonance imaging of the brain to determine the size of their corpus callosum, which is the major white matter tract connecting the left and right cerebral hemispheres. The monkeys were later given a task to determine hand preference. The authors results led them to conclude that, as in humans, male capuchins have a smaller relative size of the corpus callosum than females, and right-handed individuals have a smaller relative size of the corpus callosum than left-handed individuals.

As the two hemispheres show greater independence of function, the relative size of the corpus callosum is expected to be smaller. This has been documented in humans, and same pattern was found in capuchins. Phillips and her co-authors hypothesize their results are related to hemispheric specialization for complex foraging tasks that require the integration of motor actions and visuospatial information. In the wild, capuchin monkeys utilize both arboreal and terrestrial substrates and are also noted for being very adept at capturing small rapid prey, such as birds, lizards, and squirrels.

While such research frequently is associated with large research universities, Phillips says scientists at small liberal arts colleges such as Hiram often do not receive enough credit and, especially, for involving undergraduates, such as Lilak, in their work.

It is not where you are, Phillips says. It is the quality of the science, and scientists at small liberal arts colleges can and do conduct high-quality research. Undergraduates are an integral part of my research team - they participate in lab meetings, brainstorming, sharing ideas. They are colleagues in my lab. They just need a little more mentoring.

Contact: Steve Love
Public Library of Science

Related biology news :

1. Childrens taste sensitivity and food choices influenced by taste gene
2. Viral protein influences key cell-signaling pathway
3. Structure-building cell signals also may influence learning and memory
4. Aircraft Cabin Ventilation Influences The Transmission Of Diseases In-flight
5. NIH renews network focused on how genes influence drug responses
6. Toasty oat aroma influenced by presence of health-linked polyphenols
7. Phenotype is influenced by nature, nurture and noise
8. Genetic and environmental influences on alcohol consumption among rhesus monkeys
9. Executive monkeys influenced by other executives, not subordinates
10. Sex chromosome genes influence aggression andmaternal behavior, say UVa researchers
11. Sandia work launched on space shuttle shows live cells influence growth of nanostructures
Post Your Comments:
(Date:10/29/2015)... , Oct. 29, 2015  Rubicon Genomics, Inc., ... U.S. distribution of its DNA library preparation products, ... Rubicon,s new ThruPLEX Plasma-seq kit. ThruPLEX Plasma-seq has ... preparation of NGS libraries for liquid biopsies--the analysis ... and prognostic applications in cancer and other conditions. ...
(Date:10/29/2015)... NXTD ) ("NXT-ID" or ... the growing mobile commerce market and creator of ... leading marketplace to discover and buy innovative technology ... on StackSocial for this holiday season.   ... a biometric authentication company focused on the growing ...
(Date:10/27/2015)... , Oct. 27, 2015 In the ... issues of concern for various industry verticals such as ... due to the growing demand for secure & simplified ... various ,sectors, such as hacking of bank accounts, misuse ... electronic equipment such as PC,s, laptops, and smartphones are ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... - Zenith Epigenetics Corp. ("Zenith" or the "Company") today announced ... to its Board of Directors to replace Dr. Peter ... of experience as co-founder of Resverlogix, with expertise in the ... --> Dr. Wong remarked, "I am very ... long standing expertise in epigenetics and the advanced stage of ...
(Date:11/30/2015)... 30, 2015  Champions Oncology, Inc. (CSBR), engaged in ... personalize the development and use of oncology drugs, today ... will be presenting at the LD MICRO Investor Conference ... Time (PST).  The conference, held at the Luxe Sunset ... , will feature 200 small/micro-cap companies and is ...
(Date:11/30/2015)... 2015  HUYA Bioscience International, the leader in accelerating ... innovations, today announced it has signed a Memorandum of ... foster collaboration between KDDF and HUYA with the ultimate ... products for the global market. ... new innovative preclinical and clinical stage compounds. The company ...
(Date:11/30/2015)... and MAGDEBURG, Germany , November 30, ... (ECNR) in Vienna, Austria to ... Congress of NeuroRehabilitation (ECNR) in Vienna, Austria ... NovaVision, a wholly owned subsidiary of Vycor Medical, Inc. ... of its Internet-delivered NovaVision Therapy Suite at the 3rd ...
Breaking Biology Technology: