So sorry to hear about Jeff's accident. As a fellow motorcyclist I hate to hear about another rider down.
20 years ago my Father-In-Law suffered a TBI. While his accident was no where near as bad as Jeffs...the result was very similar. My Father-In-Law fell off a boat dock onto a cement pad, struck his head against the cement before entering the water. Friends were there to pull him out but he had already gone into a siezure.
His injury leaves him with the same problems Jeff is experiencing. He can't concentrate on something for too long, his balance and co-ordiantion are not as good as they were and he struggles sometimes when talking to others. If he exerts himself physically, he can go into siezures.
The first few months/years were the hardest for him to adjust to. His doctor had him on multiple medications until they found a dosage that would work. The recovery is a slow process that you just cant rush. This was very hard for my Father-In-Law since he is a bit impatient.
Now he leads a productive life, albiet with limitations. He can still drive, go on walks with his wife, talk and converse with family and friends. If you just met him, you would never know he was injured. However, he has learned his limitations. He knows if he stays up to late, tries focusing on something too hard or exerts himself too much, it will cause him to go into a siezsure and that may take a day to recover from.
I wish Jeff the best...although I have never met him it sounds like he and my Father-In-Law share the same "zest" for living. He just needs to be patient (easier said than done) and work with his doctors.
Good luck Jeff! God Speed!
Softail