FILE - This Oct. 17, 2010, file photo shows Atlanta Falcons corner back Dunta Robinson, right, and Philadelphia Eagles wide receiver DeSean Jackson, left, helped after a hit during the first half of an NFL football game, in Philadelphia. The NFL's brain, neck and spine committee meets Wednesday, Dec. 8, 2010,  to talk about possible changes to helmets and other equipment. (AP Photo/Mel Evans, File)

Photo by: Mel Evans

FILE - This Oct. 17, 2010, file photo shows Atlanta Falcons corner back Dunta Robinson, right, and Philadelphia Eagles wide receiver DeSean Jackson, left, helped after a hit during the first half of an NFL football game, in Philadelphia. The NFL's brain, neck and spine committee meets Wednesday, Dec. 8, 2010, to talk about possible changes to helmets and other equipment. (AP Photo/Mel Evans, File)