. >> huss kerrs who volunteer to >> huss kerrs who volunteer to be a part of ramp be a part of ramp undergoundergo an eet while doing a memory test. while doing a memory test. this one - i have to identify this one - i have to identify which letters in a sequence which letters in a sequence match match one two shots earlier. one two shots earlier. >> when it matches use button >> when it matches use button number one, when it doesn't, number one, when it doesn't, press four. press four. >> they are going fast. >> they are going fast. >> we think the cap is a >> we think the cap is a critical way of assessing critical way of assessing whether a concussion whether a concussion occurred. occurred. >> you are also >> you are also using brain using brain scans and other technologies. scans and other technologies. >> we can collect mri data, >> we can collect mri data, other data, mri gives us other data, mri gives us information about structure of information about structure of the brain and we can look at the brain and we can look at way. way. >> the images are from a >> the images are from a f

. >> huss kerrs who volunteer to be a part of ramp undergo an eet while doing a memory test.s one - i have to identify which letters in a sequence match one two shots earlier. >> when it matches use button number one, when it doesn't, press four. >> they are going fast. >> we think the cap is a critical way of assessing whether a concussion occurred. >> you are also using brain scans and other technologies. >> we can collect mri data, other data, mri gives us information about structure of the brain and we can look at way. >> the images are from a football player without a concussion, and show changes in brainwave activity as a player distinguishes between a match and non-match. look at the player who had a concussion. there's no change. >> they are virtually identifiable. >> why is that? >> the brain hasn't figured out that this number is identical to that. at a minimum it's delayed. these are people experiencing a head injury previously. they may have had this for a year. after a year... >> you have a lingering effect. >> the brain is not processing it when it should have.