Dr. Robert Cantu, who has repeatedly criticized the N.F.L.'s handling of concussions and the research that claimed to support it, said in a telephone interview yesterday that he supported the removal of all previously unconscious players from games.
But in a move that runs counter to the league's medical study findings, the N.F.L. announced last week, in a news release highlighting safety procedures toward player concussions, that teams should not return formerly unconscious players to the game or practice in which they were injured.
When he has been knocked unconscious, the player himself may not see the reality.
One paper written by several members of the Mild Traumatic Brain Injury committee, published in the January 2005 issue of the journal Neurosurgery, said, "There was no evidence of any adverse effect" of returning a formerly unconscious N.F.L. player to the same game.
After an explosion knocks the Stranger unconscious, the player realizes that Yeesha, Atrus' daughter, has disappeared.
If unconscious, a player should be assumed to have a serious neck or spinal injury until proven otherwise, and should be moved only with the greatest caution.
He lay unconscious as players hurried to his side.
Aarons, whose father is an Eagles season-ticket holder, said she remembered having a front-row view of a collision in 2008 that left a player unconscious on the field for about 20 minutes.
The dominant social networks are fantasy games built around rigged avatars, outright fictions and a silent — and often unconscious — agreement among players that the game and its somewhat creaky conceits influence the real world.
