Excess activity shrinks blood vessels in baby mouse brains

By Ashley Yeager, 13:34 PM December 4, 2013

Newborn mouse pups experience permanent brain changes when repeatedly overstimulated.

Researchers stimulated young mice pups by excessively touching the pups' whiskers, prolonging treadmill sessions or playing chronic noise. When stimulated in one of these ways for five days or longer, the mice's brains had smaller, less-branched blood vessels.

If the overstimulation lasted longer than a month, the effects were permanent. The changes could deliver less oxygen to the brain and alter the way the ...

Source URL: https://www.sciencenews.org/blog/science-ticker/excess-activity-shrinks-blood-vessels-baby-mouse-brains