Navigation Links
Mammals' Brains Grew Larger to Enhance Sense of Smell: Study
Date:5/19/2011

THURSDAY, May 19 (HealthDay News) -- The need for a good sense of smell helped lead to the development of large brains in humans and other mammals, scientists suggest.

Another driving force in mammal brain evolution may have been the ability to sense touch through fur, a sense that's acutely developed in mammals.

A team of American paleontologists used high-resolution CT scans to study 190-million-year-old fossil skulls of two of the earliest known mammal species, Morganucodon and Hadrocodium. The results showed that the tiny creatures had much larger-than-expected brains.

"Our new study shows clearly that the olfactory part of the brain and the part of the brain linked to tactile sensation through fur were enlarged in these early mammals," Zhe-Xi Luo, of the Carnegie Museum of Natural History in Pittsburgh, said in a museum news release. "A sophisticated sense of smell and touch would have been crucial for mammals to survive and even thrive in the earliest part of our evolutionary history."

The study was published May 19 in the journal Science.

"Our mammal ancestors didn't develop that larger brain for contemplation, but for the sense of smell and touch. But thanks to these evolutionary advancements, which gave mammals a head start toward developing a large brain, humans some 190 million years later can ponder these very questions of natural history and evolution," Luo said.

More information

The Social Issues Research Centre in the U.K. has more about the sense of smell.

-- Robert Preidt

SOURCE: Carnegie Museum of Natural History, news release, May 19, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1

Related medicine news :

1. Simple chemical cocktail shows first promise for limb re-growth in mammals
2. Mammals Grew Big After Dinosaurs Died Off: Analysis
3. Brains of Autistic Kids Still Larger at Age 4, 5
4. Researchers observe disruptions of daily rhythms in Alzheimers patients brains
5. Brains of People with Autism Focus More on Visual Skills
6. Longer Breast-Feeding May Be Key to Bigger Brains
7. Brains of Phonetics Experts Differ From Those of General Public
8. Tobacco smoking impacts teens brains, UCLA study shows
9. Brains need love, too
10. Pitt team finds teen brains over-process rewards, suggesting root of risky behavior, mental ills
11. Experts Brains Work Differently Than Amateurs
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mammals' Brains Grew Larger to Enhance Sense of Smell: Study
(Date:10/13/2017)... ... October 13, 2017 , ... ... Randall, PharmD ‘17, and Jennifer Huggins, PharmD ’17, along with clinical associate ... primary prevention of cardiovascular diseases during the 15th Annual Women’s Health Conference. ...
(Date:10/13/2017)... LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for care ... is the 90-day elimination period, when the family pays for care, is often waived, ...
(Date:10/13/2017)... ... 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out ... free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting ... children of all ages; it is a non-competitive, non-timed event, which is all about ...
(Date:10/13/2017)... ... October 13, 2017 , ... Coveros, a leader in agile ... a contract by the Center for Medicare and Medicaid Services (CMS). The Enterprise ... use of Agile methodologies in a consistent and high value manner across CMS ...
(Date:10/12/2017)... ... 2017 , ... First Healthcare Compliance (FHC), an industry leader ... range of technology and learning solutions at the 68th Annual American Healthcare Association ... held October 14–18, 2017 at the Mandalay Bay Resort in Las Vegas, Nevada. ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... and NEW YORK , Sept. 27, 2017 /PRNewswire/ ... health and big data solutions, today announced that its MyDario product is ... your local TV listings for when The Dr. Oz Show airs in ... The nine-time ... month. ...
(Date:9/22/2017)... Sept. 22, 2017  As the latest Obamacare repeal ... Bill Cassidy (R-LA) and Lindsey Graham ... the medical device industry is in an odd place. ... the 2.3% excise tax on medical device sales passed ... want covered patients, increased visits and hospital customers with ...
(Date:9/18/2017)... ALLENTOWN , Pa. and KALAMAZOO, Mich. ... Allentown, Penn. , and OptiMed Specialty Pharmacy ... a business partnership to offer a strategic hub service ... PMD Healthcare,s highly sought-after personal spirometer, Spiro PD 2.0, ... A spirometer is a medical device used ...
Breaking Medicine Technology: