Many different sports you can get Concussions in, Hockey, Football, are the most likely ones to happen. But almost any sport can cause one.
Scientists gave some mice normal (1) concussion and the other mice more than one. Still they could run the maze by memory and make it out. But a few days later the neurons didn't respond. It was very amazing for scientists (Maybe not for the mice)
A concussion is a form of a mild traumatic brain injury occurs after a blow to the head. When getting a concussion the brain is pushed up against the skull. People with concussions can get headaches dizziness, fatigue, impaired foucus and sensitivity to light and sound.