-- Robert Preidt
FRIDAY, Aug. 8, 2014 (HealthDay News) -- Older adults' minds may
be sharpest in the morning, a new small study finds.
Canadian researchers used functional MRI to monitor the brain
activity of 16 younger adults (aged 19 to 30) and 16 older adults
(aged 60 to 82) as they did a series of memory tests while
subjected to distractions.
When the tests were conducted between 1 p.m. and 5 p.m., older
adults were 10 percent more likely to be distracted than younger
adults. But that gap narrowed when the tests were conducted between
8:30 a.m. and 10:30 a.m., according to the study recently published
online in the journal
Psychology and Aging.
The findings offer strong evidence that older adults' brain
function can vary widely during the day, according to the
researchers at the Baycrest Center for Geriatric Care in
"Time of day really does matter when testing older adults. This age group is more focused and better able to ignore distraction in the morning than in the afternoon," study author John Anderson, a Ph.D. candidate at Baycrest's Rotman Research Institute and the psychology department at the University of Toronto, said in a center news release.
Older adults' "improved cognitive performance in the morning
correlated with greater activation of the brain's attentional
control regions -- the rostral prefrontal and superior parietal
cortex -- similar to that of younger adults," he explained.
In practical terms, Anderson said the findings suggest that
mornings might be the best time for older adults to schedule their
most mentally challenging tasks, such as doing taxes, taking a
license renewal or other test, trying a new recipe, or seeing a
doctor about a new health problem.
The findings should also be taken into account by researchers
who study older adults' mental function, another expert said.
"Since older adults tend to be morning-type people, ignoring time of day when testing them on some tasks may create an inaccurate picture of age differences in brain function," study senior author Dr. Lynn Hasher, a senior scientist at the research institute, said in the news release.
HealthinAging.org offers tips for
keeping your brain young.
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