HOME >> MEDICINE >> NEWS
Brains of elderly can compensate to remain sharp, study indicates

DURHAM, N.C. -- Elderly adults who perform as well as younger adults on certain cognitive tests appear to enlist the otherwise underused left half of the prefrontal cortex of their brain in order to maintain performance, Duke University neuroscientists have found. In contrast, elderly people who are not "high performers" on the tests resemble younger adults in showing a preferred usage of the right side of the prefrontal cortex.

The researchers said that, although their finding is basic, it raises the potential of using either training or drugs to enhance cognitive function in the elderly by increasing "recruitment" of the left prefrontal cortex.

The evidence for compensatory brain activity in the high-performing elderly was reported in the November 1, 2002, issue of NeuroImage, by a research team led by Roberto Cabeza of Duke's Center for Cognitive Neuroscience. Other co-authors are Nicole Anderson, Jill Locantore and Anthony McIntosh of the University of Toronto.

In their study, Cabeza and his colleagues sought to better understand a phenomenon seen in previous studies, in which older people tend to show a reduced "hemispheric asymmetry" in activity of the two sides of the prefrontal cortex with aging. The prefrontal cortex, the brain region just behind the forehead, is where higher-level cognitive processing takes place.

Past research has shown that in young people certain cognitive tasks are carried out by the right frontal cortex, but older people tend to lose that asymmetry of processing. They tend to show more bilateral activity of the two brain hemispheres during such tasks.

Neuroscientists have proposed two divergent theories to explain this change with age. According to the "dedifferentiation" theory, age-related reduction in asymmetry occurs because older adults become less able to recruit specialized neural mechanisms. In contrast, the "compensation" theory holds that the asymmetry reduction occurs largely because the elderly
'"/>

Contact: Dennis Meredith
dennis.meredith@duke.edu
919-681-8054
Duke University
7-Nov-2002


Page: 1 2 3

Related medicine news :

1. Brains of people with autism recall letters of the alphabet in brain areas dealing with shapes
2. Rutgers researcher: Brains in dyslexic children can be rewired to improve reading skills
3. Brains of those in certain professions shown to have more synapses
4. From Cow Brains To Surgical Scrubs: Selected Students Will Get A Close-Up Look At Neurosurgery At Brainworks
5. Carnegie Mellon, Pitt Team Show That Adult Brains Compensate For Damage To Language Systems After Stroke Occurs
6. Nonintrusive Imaging Technique Useful For Identifying Language Regions In Kids Brains
7. Not enough evidence that multivitamins prevent infections in the elderly
8. Drug therapy may be comparable to invasive cardiac procedures for elderly patients with heart attack
9. Use of potentially inappropriate medications among elderly common in some European countries
10. Neurobehavioral function during coma, stroke rehabilitation effective for elderly
11. Flu vaccination impact on elderly deaths may be over-estimated

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Brains elderly can compensate remain sharp study indicates

(Date:12/22/2014)... Explorys, the leader in big data-driven ... team: Greg Yarrington as Vice President of Operations, Adam ... as Vice President of Solutions. These new leaders are ... in 2015 to support client demand for the company’s ... and growth of its partner network. , Since ...
(Date:12/22/2014)... 22, 2014 In recognition of Veteran’s ... to Hero Reward, a local organization that provides services ... , Located on a couple hundred acres in ... offers lodging, world class fishing, hunting, hiking, horseback riding, ... founded several years ago to support U.S. Service men ...
(Date:12/22/2014)... (PRWEB) December 22, 2014 Xarelto ... federal panel of judges has granted a request to ... the U.S. District Court, Eastern District of Louisiana. The ... order on December 12 to transfer over 50 Xarelto ... districts to the Louisiana court for consolidation under U.S. ...
(Date:12/22/2014)... Dallas, Texas (PRWEB) December 22, 2014 Luxury ... with Community Partners of Dallas to provide logistics ... A Dallas-based company, Peacock Alley has a long history of ... works. The additional sponsors of this year's Toy Drive were ... time to give back than the holidays. Providing gifts to ...
(Date:12/22/2014)... 22, 2014 NAPW honors ... Woman of the Year. She is recognized with this ... most recognized networking organization of professional women in the ... Association of Professional Women is a vibrant networking community ... , Ms. Kreider is passionate and committed to best ...
Breaking Medicine News(10 mins):Health News:Explorys Continues to Experience Rapid Growth, Adds Three Healthcare IT Executives to Its Leadership Team 2Health News:Explorys Continues to Experience Rapid Growth, Adds Three Healthcare IT Executives to Its Leadership Team 3Health News:Discount Labels Donates Portion of November Sales to Hero Reward Program 2Health News:Panel Orders Xarelto Lawsuits Consolidated Into Multi-District Litigation Reports Alonso Krangle LLP 2Health News:Panel Orders Xarelto Lawsuits Consolidated Into Multi-District Litigation Reports Alonso Krangle LLP 3Health News:Panel Orders Xarelto Lawsuits Consolidated Into Multi-District Litigation Reports Alonso Krangle LLP 4Health News:Peacock Alley and Community Partners of Dallas Fulfill an Estimated 12,000 Holiday Wishes for Deserving Children 2Health News:National Association of Professional Women Announces Cheryl A. Kreider, President / CEO of Kreider Health Solutions, LLC, a 2014 Professional Woman of the Year 2
(Date:12/22/2014)... STOCKHOLM , Dec. 22, 2014 ... Pharmaceuticals, Inc. today announced that the Committee for Medicinal ... Agency (EMA) has adopted a positive opinion for the ... of adult men with Peyronie,s disease with a palpable ... at the start of therapy. The use ...
(Date:12/22/2014)... 22, 2014  Mark Farrah Associates (MFA), ... summary of the 2015 marketplace exchange projections and ... According to a recent ASPE (Office ... Department of Health and Human Services) report, an ... medical plans through the Marketplace as of October ...
(Date:12/22/2014)... 22, 2014  Pfenex Inc. (NYSE MKT: PFNX) today ... has been filed and is now open and that ... Department of Health and Human Services (HHS), through the ... "We are extremely pleased to have the IND now ... a significant milestone in our company,s partnership with BARDA ...
Breaking Medicine Technology:Sobi's Xiapex receives positive opinion by CHMP for the treatment of Peyronie's disease 2Sobi's Xiapex receives positive opinion by CHMP for the treatment of Peyronie's disease 3Sobi's Xiapex receives positive opinion by CHMP for the treatment of Peyronie's disease 4Sobi's Xiapex receives positive opinion by CHMP for the treatment of Peyronie's disease 5Sobi's Xiapex receives positive opinion by CHMP for the treatment of Peyronie's disease 6Insights into the Marketplace and Individual Market Growth 2Pfenex Announces Active IND and Additional BARDA Funding for Recombinant Anthrax Vaccine Program, Px563L 2Pfenex Announces Active IND and Additional BARDA Funding for Recombinant Anthrax Vaccine Program, Px563L 3
Cached News: