Cell Density Remains Constant As Brain Shrinks With Age

Friday, June 19, 2015 - 13:30 in Biology & Nature

New, ultra-high-field magnetic resonance images (MRI) of the brain provide the most detailed images to date to show that while the brain shrinks with age, brain cell density remains constant. The images of cognitively normal young and old adults provide the first evidence that in normal aging, cell density is preserved throughout the brain, not just in specific regions, as previous studies on human brain tissue have shown. The findings also suggest that the maintenance of brain cell density may protect against cognitive impairment as the brain gradually shrinks in normal aging. read more

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