In this segment on traumatic brain injury and a concussion focuses on a college football player and change the lives disabilitiies he suffers as a result of multiple shocks. Dr. Halpern, a practicing neurologist in New York City, explained the dangers, symptoms associated with such injuries, and avoid the importance of vigilance to tragedies like this.
http://www.youtube.com/watch?v=9RgVJIL_jf4&hl=en