Between one-point-seven million and three million sports-related concussions happen every year.
As many as 300-thousand of those injured are football players.
Concussions are tricky to diagnose; a player might look fine, but develop symptoms hours later.
Here'smore on a new, portable test designed to take the guess work away.
Football is a tough sport.
A hard strike to the head is not uncommon.
Twenty-one- year-old towson university linebacker zane ventimiglia suffered not one, but two concussions last season.
He didn't see either hit coming, but felt them after.
Cg zane ventimiglia football player in: :16 out: :22 "i remember being pretty off-kilter.
Not able to balance well."
Vo/narration..... athletic director nathan wilder says right after injury trainers have to rely partly on subjective tests, like how an athlete looks or says he feels.
Cg nathan wilder associate athletic dir.
Towson university in: :31 out: :37 "these kids are pretty resilient, they'll take a hit, come off and say they're ok.
Then a couple of minutes later, they're not."
Vo/narration..... now there's a new portable device designed to give an objective assessment.
The brainscope measures brain waves.
Cg leslie prichep, phd chief science officer brainscope in: :43 out: :48 "when somebody hits the head, it changes the brain electrical activity pattern."
Vo/narration....... it's designed so a trainer can easily use it, there's a disposable headset with sensors that