Michael Benoit told Diane Sawyer on Good Morning America today that he turned over part of his son's brain to Julian Bailes, a neurologist at the Sports Legacy Institute.
Tissue analysis, said Bailes, revealed that Benoit's brain tissue had damage similar to those of Alzheimer's patients, suggesting that he was suffering from a form of dementia.
Benoit's dad told Sawyer that his son suffered "multiple concussions," while Dr. Bailes said that just three could lead to serious consequences.
Whatever the case, said Michael Benoit:
"The person that did this is not the man we know and love."