This is your child’s brain on books: Scans show benefit of reading vs. screen time

Both studies used a special type of MRI, called diffusion tensor imaging, to examine the white matter of 47 healthy children between the ages of three and five who had not yet started kindergarten. The brain’s gray matter contains the majority of the brain cells telling the body what to do. White matter is made up of fibers, typically distributed into bundles called tracts, which form connections between brain cells and the rest of the nervous system.
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