New study focuses on brain's first 24 hours after head injury
Many concussion studies have focused on the long-term effects of brain injuries. However, few have examined the very short-term effects. Researchers found that in the first 13 hours after a concussion, there are decreases in activity in certain regions of the right hemisphere of the brain. However, seven weeks after a concussion, there is more activity in these brain regions than in people who didn't experience a concussion in the first place. - nfl.com