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:5/25/2016)... ... 2016 , ... HealthPostures , a national ergonomics manufacturer ... at the American Society of Safety Engineers Conference in Atlanta, Georgia. The four-day ... speakers and exhibitors from more than 40 countries are scheduled to appear at ...
(Date:5/25/2016)... (PRWEB) , ... May 25, 2016 , ... ... due to popular demand for minimally invasive, endoscopic spine surgeries in the Montgomery ... will begin seeing patients in the Germantown office of American Spine every Monday. ...
(Date:5/24/2016)... ... May 24, 2016 , ... Sterling Global Products is launching a Kickstarter ... refillable hanging wipe dispenser. The campaign kick-off video is located via this link ... 2016. The goal is to raise $1,000 per day for a total of $25,000. ...
(Date:5/24/2016)... Milwaukee, WI (PRWEB) , ... May 24, 2016 ... ... has announced that Rudolfo (Rudy) Cifolelli has joined the company as Vice President ... and the development of U.S. and international sales in the rapidly expanding field ...
(Date:5/24/2016)... ... May 24, 2016 , ... Fire Door Solutions, headquartered in ... from start to finish, for Life Safety compliance. These expanded services include ... by the Joint Commission, and fire stopping reviews, inspections, and repairs. Clients ...
Breaking Medicine News(10 mins):
(Date:5/25/2016)... CAMBRIDGE, England , May 25, 2016 /PRNewswire/ ... genomics company employing the precision of circulating tumour ... oncology, today announces the appointment of Professor ... will provide medical leadership across the clinical development ... that Inivata,s products help deliver significant improvements in ...
(Date:5/24/2016)... , May 24, 2016 ... beide primären Endpunkte und ... Überlegenheit in ‚ausgezeichneter plus guter ... Colons    ,      (Logo: ... gab heute neue positive Daten von der MORA-Studie ...
(Date:5/24/2016)... , May 24, 2016  NxStage Medical, Inc. (Nasdaq: ... focused on advancing renal care, today announced that ... participate in the following schedule of investor conferences. Where ... available at http://ir.nxstage.com/ .   ... Healthcare Conference NY, NY           Friday, June 10, 2016 ...
Breaking Medicine Technology: