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:12/2/2016)... ... December 02, 2016 , ... With the number of ... of an injury, patients must find the one that works for them. When an ... created a machine that worked and decided to share it with others. , He ...
(Date:12/2/2016)... Beverly Hills, CA (PRWEB) , ... December 02, ... ... and reconstructive surgeon in Beverly Hills, California, will be included in the 2016 ... is given to exceptional professionals based on the amalgamation of their education, experience, ...
(Date:12/2/2016)... ... December 02, 2016 , ... Mediaplanet is ... USA Today, which covers the innovative treatments, therapeutic technologies, and revolutionized nutrition that ... “We are prolonging life 6 years in the last 3 decades,” says Dr. ...
(Date:12/2/2016)... ... December 02, 2016 , ... ... Hyatt Regency Waikiki Beach Resort and Spa in Honolulu, offering local frontline clinicians ... of pain management. , The demand for supplemental training related to pain ...
(Date:12/2/2016)... ... December 02, 2016 , ... Sourced from the Isbre Springs beneath the ... its unmatched natural purity of just 6 ppm TDS (Total Dissolved Solids) in addition ... has been available in several ShopRite and FoodTown stores in NJ and received rave ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... 2016  PipelineRx, a leading medication management technology ... demonstrations of its SaaS-based telepharmacy platform, PowerGridRx™ ... 2016 Midyear Clinical Meeting and Exhibition, December 5-7 ... nearly 300 hospital clients nationally, the Company is ... to dramatically improve pharmacy operations, enhance patient safety, ...
(Date:12/2/2016)... Texas , Dec. 2, 2016  Maxor National Pharmacy ... acquisition of Pharmaceutical Specialties, Inc. ("PSI").  The combination of ... Georgia -based PSI bring together both company,s ... physicians, manufacturers, and payers an industry-leading specialty pharmacy. ... , ...
(Date:12/2/2016)... Dec. 2, 2016 Lianluo Smart Limited ... "the Company") which develops, markets and sells medical ... China and international markets, recently ... and Treatment New Progress Forum, co-hosted by the ... Province , Guangdong Provincial People,s Hospital and ...
Breaking Medicine Technology: