Navigation Links
Steps Start to Add Up to a Math Path in the Brain
Date:9/24/2009

With functional MRI, researchers see that numbers trigger distinct activity patterns,,

THURSDAY, Sept. 24 (HealthDay News) -- Careful observation and analysis of brain activity enables scientists to determine what number a person has just looked at or how many dots they've just been shown, a French study has found.

The researchers said their findings confirm the theory that numbers are encoded in the brain through detailed and specific activity patterns, something they say could help improve the investigation of humans' high-level numerical abilities.

While "number-tuned" neurons have been identified in monkeys, scientists previously had only been able to identify number-related brain regions in humans.

In the new study, the researchers used functional MRI to scan the brains of 10 volunteers as they were shown either number symbols or dots. They then used a multivariate analysis method to determine which number or how many dots the volunteers had seen.

The study was published online Sept. 24 in Current Biology.

"It was not at all guaranteed that with functional imaging it would be possible to pick this up," Evelyn Eger of Inserm, a biological, medical and public health research institute in France, said in a news release from the journal's publisher.

"In the monkey, neurons preferring one or the other numerosity appear highly intermixed among themselves as well as with neurons responding to other things, so it might seem highly unlikely that with [functional] MRI at 1.5 mm resolution -- where one voxel contains many thousands of neurons -- one would be able to detect differences in activity patterns between individual numbers," Eger said. "The fact that this worked means that there is probably a somewhat more structured layout of preferences for individual numbers that has yet to be revealed by neurophysiological methods."

"With these codes, we are only beginning to access the most basic building blocks that symbolic math probably relies on," she said. "We still have no clear idea of how these number representations interact and are combined in mathematical operations, but the fact that we can resolve them in humans gives hope that at some point we can come up with paradigms that let us address this."

More information

The U.S. National Institute of Neurological Disorders and Stroke has more about the brain.



-- Robert Preidt



SOURCE: Cell Press, news release, Sept. 24, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Small Steps May Speed Recovery in ICU Patients
2. Payless and Shoppers Take Steps In the Fight Against Breast Cancer This October
3. Yoga Sandals(R) Footwear Steps up with Donations for Womens Health
4. Fight Against Obesity Takes Off! 16 Mayors and More Than 80 Cities Take Steps Toward Wellness
5. YMCA Promotes Small Steps to a Healthier Lifestyle During America On the Move Week With the YMCA, Sept. 20-27, 2009
6. Its Healthy Aging Month: SCAN Health Plan Arizona Offers Insight and 10 Simple Steps for Protecting Your Health
7. Independence Blue Cross Takes Steps to Prepare for H1N1 and Seasonal Flu
8. Red Cross Survey Finds Overwhelming Majority of Public Taking Steps against H1N1 Flu Virus
9. Confusing New PBM Drug Pricing Terms Leave Payors Unsure of Next Steps
10. 10 Steps to Affordable Health Care Overhaul: NCPA Proposes Reforms to Protect Choices, Control Costs and Preserve Access
11. New Research Reveals the Majority of Parents Overlook Key Steps to Keep Curious Toddlers Safe at Home
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Steps Start to Add Up to a Math Path in the Brain
(Date:10/13/2017)... ... ... As health professionals work to improve their approach to healthcare, there is ... than filling out a survey; in many cases health professionals and patients are working ... and research on the importance of active engagement with patients and members of the ...
(Date:10/13/2017)... ... October 13, 2017 , ... PurhealthRX , a leading Health and Nutrition ... the Purzorb™process to full spectrum CBD oil will revolutionize the rapidly growing CBD market ... can be easily incorporated into liquid products, while reducing costs to end users. , ...
(Date:10/13/2017)... SAN LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... with Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for ... mean is the 90-day elimination period, when the family pays for care, is often ...
(Date:10/13/2017)... ... , ... Yisrayl Hawkins, Pastor and Overseer at The House of Yahweh, has ... least understood books in the Holy Scriptures, Revelation. The Book of Revelation paints a ... centuries. Many have tossed it off as mere rubbish, but Yisrayl Hawkins says that ...
(Date:10/13/2017)... ... ... “America On The Brink”: the Christian history of the United States and the loss ... author, William Nowers. Captain Nowers and his wife, Millie, have six children, ten ... the Navy. Following his career as a naval aviator and carrier pilot, he ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... , Oct. 4, 2017 ... single-use, self-contained, illuminating medical devices, today announced regulatory ... Health Surveillance Agency (or Agência Nacional de Vigilância ... first single-use, cordless surgical retractor with integrated LED ... optimal access, illumination and exposure of a tissue ...
(Date:10/2/2017)...  Eli Lilly and Company (NYSE: LLY ... quarter of 2017 on Tuesday, October 24, 2017. Lilly ... with the investment community and media to further detail ... will begin at 9 a.m. Eastern time. Investors, media ... of the conference call through a link that will ...
(Date:10/2/2017)... Oct. 2, 2017 Halo Labs announces the European launch ... called the HORIZON at MIBio 2017 in Cambridge, U.K ... visible particulate matter in biopharmaceutical samples with unprecedented speed and sensitivity ... novel technique Backgrounded Membrane Imaging. ... The HORIZON subvisible particle analysis system ...
Breaking Medicine Technology: