Former Miami Dolphins All-Pro wide receiver Mark Duper is the ninth living former NFL player to be diagnosed with signs of chronic traumatic encephalopathy, or CTE, a degenerative brain disease many scientists say is caused by head trauma and linked to depression and dementia. Duper told "Outside the Lines" he learned of his diagnosis Friday from researchers involved with the testing. The conclusions regarding the former players, according to the researchers, are based on a brain scan that uses a radioactive marker to detect accumulations of abnormal tau, a protein that damages brain cells in areas that control memory, emotions and other functions. The researchers say the diagnoses also are based on symptoms reported by the former players and on clinical evaluations. "It was shocking," Duper told OTL about his reaction to hearing that he had signs of CTE. "I hoped nothing was wrong. "I've had memory things where I would go to the store and forget what I went for. And I have emotional swings and panic attacks." Read more http://espn.go.com/espn/otl/story/_/id/9948613/ex-miami-dolphins-star-mark-duper-shows-signs-cte