Dec 26, 2013 6:14 AM by Lindsay MacLeod, KSBY News
A new study suggests a bad blow to the head could impact brain function, even if the person who was injured didn't get a concussion.
Researchers at Dartmouth College studied the brains of college student athletes who hadn't had a concussion before and after the athletic season.
Researchers found 20 percent of students who played contact sports like football or ice hockey and 11 percent of non-contact athletes scored much lower than expected on post-season tests.
Scans also showed those players had more changes in the nerve signals that connected the right and left sides of the brain than athletes who scored higher on the tests.
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