HOME >> BIOLOGY >> NEWS
New Clues To Evolution Of Human Brain

In her quest to examine the contents of consciousness, a scientist at The Johns Hopkins University has produced new evidence of the evolutionary path from the monkey brain to the human.

Susan Courtney, an assistant professor of psychology, recently reported that she had pinpointed the place where the human brain stockpiles information about spatial relationships for short-term use.

It was not where anyone expected.

Until recently, many scientists argued that storage depots for short-term memory (called "working memory") in humans were probably located in the same place as in monkeys; memory of spatial relationships was thought to be stored in the top half of the frontal cortex and memory of objects was stored in the bottom half.

But using a relatively new brain-mapping technology called functional magnetic resonance imaging (fMRI*), Courtney discovered that the human brain has a dedicated place for spatial working memory located further back in the brain anatomy.

"Until now, it's been rather controversial," Courtney said, "because people have based their theories about human brain physiology on what they have seen in non-human primates. And yet when scientists went looking for a particular place for spatial working memory in humans, they couldn't find it. But now, with the help of new technologies such as fMRI, we can see where the human brain handles some of its short-term storage."

"The difference has interesting implications for human brain evolution," Courtney said.

"The comparison indicates that there has been a great expansion of the frontal cortex in the evolution from monkeys to humans, pushing this older area, reserved for spatial memory, out of the way," she said. "Of course, one of the big questions is what replaced it. From the imaging work and from studies of people with damage to that part of the brain
'"/>

Contact: Gary Dorsey
gdd@jhu.edu
410-516-7160
Johns Hopkins University
27-Jan-1999


Page: 1 2 3

Related biology news :

1. How wounds heal Clues from flies
2. Shadow proteins in thymus - Clues to how immune system works?
3. Clues to the evolution of photosynthesis
4. Clues from analysis of fish bones supports theory of climate shift 5000 years ago, onset of El Nio
5. Clues to development of eyes light-sensitive cells found
6. Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia
7. Ant-Fungus Relationship May Provide New Clues About Antibiotics
8. Jumpin Jordan! Athletic Gene Yields Biological Clues
9. Structure Of Fat-Depleting Protein Reveals Important Functional Clues
10. Model Polymers Reveal New Clues to Protein Folding
11. Study Finds Protein Clues To Early Embryo Development

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/1/2020)... ... 2020 , ... Catalent, a global leader in clinical supply ... facility in Minakuchi, located in the Shiga prefecture of Japan. , Operating in ... new 60,000-square-foot facility will provide customers with flexible clinical supply solutions, serving both ...
(Date:6/28/2020)... ... 2020 , ... In an upcoming episode scheduled for the fall of 2020, ... solutions (POCT). Check local listings for more info. , Today, the majority of testing ... to labs throughout the country. Results are then available several days later. Now, in ...
(Date:6/23/2020)... England (PRWEB) , ... June 23, 2020 , ... ... Africa supporting sustainable healthcare, and Renovagen Ltd, a UK supplier and manufacturer of ... project to support testing operations in the fight against the COVID-19 pandemic in ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... SCOTTSDALE, Ariz. (PRWEB) , ... July 29, 2020 , ... ... cell joint injections for only $3950. With 50 million stem cells total, patients may ... well stem cell therapy works for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 ...
(Date:7/31/2020)... Mass. and SOMERSET, N.J (PRWEB) , ... July ... ... leading genome editing company, and Catalent, the leading global provider of advanced delivery ... consumer health products, today announced that they have entered into a strategic partnership ...
(Date:7/22/2020)... ... , ... Join experts from Reed Tech , Gary Saner, Sr. Manager, ... hour live webinar on Thursday, August 13, 2020 at 11am EDT (4pm ... devices. Specifically, for medical devices, the NMPA has departments dealing with medical device registration ...
(Date:7/18/2020)... ... July 17, 2020 , ... dicentra , a leading ... food industries, is pleased to announce that Charles Galea has joined its clinical ... Charles is an accomplished and results-driven sales executive with over 10 years of ...
Breaking Biology Technology:
Cached News: