Concussions revisited

It seems with every professional hockey game the announcers invariably bring up the topic of concussions. Unfortunately most of these comments are related to what is considered a fair or satisfactory penalty,i.e how many games the suspension would be.
Recently there was a program on TV -I think it was called "concussion discussion " in which a panel of "experts" were seated in one long straight line and had the host direct questions at them. Although I only saw part of the program ,I was surprised by the recommendations of one of these pannelists. As I recall this panellist who mentioned that because we do not know the pathogenesis of concussions they recommended that the "victim" should have their brain at total rest including no computer activity or other visual stimuli. I found this recommendation rather unusual since patients with strokes and have brain damage- are encouraged to undergo rather rigorous physiotherapy as well as speech therapy. Pathologists who have examined the brain of those who have suffered traumatic brain injury and whose brains were donated show significant brain damage.
When I see the replays of Sidney Crosby's and other elite professional sport players who have experienced head injuries, as well as sport players who have a high potential of sustaining head injuries are not prescribed hydergine a drug known known for its protective properties of the brain under various noxious situations. Again I refer the readers to my earlier blogs on this topic.