Former New England Patriots linebacker Ted Johnson is one of the six former NFL players among the dozen athletes who have agreed to assist in a study by the Boston University School of Medicine's Center for the Study of Traumatic Encephalopathy, The New York Times reported Tuesday. Johnson, 35, said multiple concussions have resulted in "permanent and degenerative" problems with memory and depression.
The newspaper said the center will announce Thursday that former Houston Oilers linebacker John Grimsley, who died this year at the age of 45, had chronic traumatic encephalopathy -- a condition often associated with boxers.
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