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August 3rd 2008 22:41
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Aging hurts memory 'replay'
It all rests with the rats, you see;
From the Chcagotribune.com
Aging hinders the consolidation of memories during sleep, a process that's crucial for the conversion of fresh memories into long-term ones, say University of Arizona researchers.
The researchers recorded activity in the hippocampus—a brain region involved in learning and memory—in 11 young and 11 old rats. In the young rats, the sequence of neural activity recorded while they navigated mazes was repeated while they slept. This was not the case in most of the older rats.
The rats with the best sleep replay also performed the best in their age groups on spatial memory tasks.
Identifying the specific memory deficit in the brains of older adults may be the first step to preventing age-related memory loss, said researcher Michael Hasselmo of Boston University. The study is in the July 30 issue of The Journal of Neuroscience.
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God bless and amen, let's see if that helps just a little.
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