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:5/22/2015)... Mountain Point Medical Center, a campus of ... on Friday, May 29, 2015 at 11 a.m., followed by ... new medical center, set to officially open on June 1, ... 84043. , “The opening of Mountain Point Medical Center ... County community,” said Kent Loosle, CEO of Mountain Point Medical ...
(Date:5/22/2015)... Omar Ahmad Barrada, a junior at Milton ... 2015 Congress of Future Medical Leaders in Boston, Mass. ... “America’s highest achieving high school students.” , “I’m excited ... goals and learn better study habits,” said Omar. “The ... we can ask the surgeons questions.” , The goal ...
(Date:5/22/2015)... 2015 Family, friends, students, colleagues, mentors ... oncologist, Dr. LaSalle D. Leffall, on Monday, May 18, ... after Grand Rounds in the hospital’s Tower Auditorium. Leffall’s ... the auditorium, trying to keep the secret. “I’d like ... sees me, he’ll know something is up,” she said. ...
(Date:5/22/2015)... WA (PRWEB) May 22, 2015 According to ... of all generations are equally as likely to worry about ... Millennials, 75% Gen X, 77% Boomers, 69% Silent Generation), which ... agree they are scared of aging, particularly Millennials (47%), Gen ... by Harris Poll in April, 2015 among more than 2,000 ...
(Date:5/22/2015)... According to Berks and Beyond , Pennsylvania ... totaling almost 2,500 confirmed drug deaths, as reported on May ... 2,489 deaths stemming from legal and illegal drug use in ... every day to fatal overdoses or other drug related deaths. ... of the most rife with drug related deaths. The city, ...
Breaking Medicine News(10 mins):Health News:Mountain Point Medical Center, a Campus of Jordan Valley Medical Center, Hosts Ribbon Cutting Ceremony and Community Celebration on Friday, May 29, 2015 2Health News:Milton Hershey School Student Chosen for Congress of Future Medical Leaders 2Health News:Colleagues Surprise Dr. LaSalle Leffall with 85th Birthday Celebration 2Health News:New Study Reveals America’s Fear of Aging 2Health News:New Study Reveals America’s Fear of Aging 3Health News:Philadelphia Ranks Among the Tops Cities in Penn. for Drug Deaths 2
(Date:5/22/2015)... TORONTO , May 22 2015 /CNW/ - The Taskforce ... are very appreciative of all the hard work that the ... the past six months. This program recognizes the needs of ... receive at least $75,000 a year, tax free, with annual ... will be eligible for annual payments of $100,000 based on ...
(Date:5/22/2015)... mayo de 2015 Dipexium Pharmaceuticals, ... farmacéutica de fase tardía centrada en el ... 0.8%), y colaboradores de investigación clínica, han ... el diseño innovador de los ensayos pivotales ... evalúan Locilex®, su nuevo péptido de antibiótico ...
(Date:5/22/2015)... 2015  Effective staffing of key marketing services ... success. Research and consulting leader ... pharmaceutical and biotech marketing managers with metrics detailing ... are being channeled into marketing operations of global ... utilize this report to benchmark their own resource ...
Breaking Medicine Technology:Dipexium anuncia presentación en el séptimo Simposio Internacional sobre el Pie Diabético 2Dipexium anuncia presentación en el séptimo Simposio Internacional sobre el Pie Diabético 3Dipexium anuncia presentación en el séptimo Simposio Internacional sobre el Pie Diabético 4Dipexium anuncia presentación en el séptimo Simposio Internacional sobre el Pie Diabético 5Dipexium anuncia presentación en el séptimo Simposio Internacional sobre el Pie Diabético 6Effective Marketing Services Group Critical for Pharmaceutical Brand Recognition 2
Cached News: