Changes continue to occur in a concussed brain even after standard clinical tests have returned to normal. Damage in the very long fibre tracks in the brain of concussed players can be detected up to three months after the concussion and after the individuals have been approved for return to athletics. It is also possible to detect ‘hyper-connectivity’ in the brain, suggesting the brain is still trying to compensate for the concussion.
CHF, CIHR, CCNA, CSERC, OICR, OBI
BrainsCAN "Persistent post-concussion brain changes in adolescent hockey players" (2018). Research Summaries. 1.