CNN Unguarded With Rachel Nichols April 12, 2014 02:57:00
High school hockey. >> when was your last concussion. >> at the end of the season. >> sfwhapd. >> i went to the board and got hit from behind. saw stars and dizziness and called it quits after that. >> but players who take a hit aren't always willing to sit out. >> it is a flexible electronic device worn on your head for impact. >> it would help players check their pride and get potential injuries checked out. the skull cap with a sensor placed inside of it is worn under a helmet. >> it is up to other players to notice what is going on back there. >> that's correct. >> what is visible is a sma...