Mapping the brain’s highways

New map showing messaging routes in the brain may help explain why some injuries are worse than others

By Stephen Ornes, 18:02 PM March 6, 2014

Some people use gray matter as a slang term to mean intelligence or brains. Gray matter is in fact real, one of the two major types of tissues making up the brain. White matter is the other type. Like superhighways, its big bundles of nerve fibers connect different regions of gray matter. And like traffic, important messages travel along the white matter from one part of the brain to another. A new map of these superhighways suggests why some brain injuries are more devastating than others: I...

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