Navigation Links
Mammals' Brains Grew Larger to Enhance Sense of Smell: Study

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:
Related Image:
Mammals' Brains Grew Larger to Enhance Sense of Smell: Study
(Date:6/26/2016)... ... 26, 2016 , ... On June 10-11, 2016, A Forever Recovery, a holistic ... World’s Longest Breakfast Table in Battle Creek, MI, where the rehabilitation facility is located. ... some of the world’s leading providers of cereal and other breakfast foods. Its residents ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/26/2016)... Birmingham, Lake Orion, Clarkston, Michigan (PRWEB) , ... ... ... their direction with respect to fertility once they have been diagnosed with endometriosis. ... for tolerable intercourse but they also require a comprehensive approach that can help ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery ... of Mohs Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , ... for skin cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, ... Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms ... Final Cut Pro X . Simply select a ProHand generator and drag it above ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Research ... World Market for Companion Diagnostic Tests" report to their ... Market for Companion Diagnostics The World Market ... and personalized medicine diagnostics. Market analysis in the report includes ... Test Market (In Vitro Diagnostic Kits) by Region (N. America, ...
(Date:6/23/2016)... -- MedSource announced today that it has selected Datatrial,s ... choice.  This latest decision demonstrates MedSource,s commitment to ... by offering a state-of-the-art electronic data capture (EDC) ... the EDC platform of choice in exchange for ... long been a preferred EDC platform by our ...
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced ... BRAHMS PCT (procalcitonin) assay as a dedicated testing solution ... this clearance, Roche is the first IVD company in ... sepsis risk assessment and management. PCT is ... levels in blood can aid clinicians in assessing the ...
Breaking Medicine Technology: