Kolb told reporters he took part in "a little bit" of practice Wednesday, but nothing has been decided about his availability for Sunday's game against the Cleveland Browns. Both Kolb and Cardinals coach Ken Whisenhunt indicated the quarterback's workload would be gradually increased during the week.
Unlike the situation with the Browns and their quarterback, Colt McCoy, the Cardinals benched Kolb after he took a knee to the head on the third offensive play against the 49ers. He immediately went to the locker room for evaluation, and it was determined he shouldn't return to the game.
Kolb said the football culture is better at dealing with concussions than it used to be.
"I think that there are so many studies coming out now that prove long-term effects and things like that," Kolb said. "Obviously, our health is No. 1, especially when it comes to your brain. I want to be out there as much as anybody, but it's just something you don't push."
Kolb said he has had "a couple three" concussions during his career, according to The Arizona Republic, the latest during the 2010 season opener that forced him to miss the next game. Kolb, then the starter for the Philadelphia Eagles, wound up losing the job to his replacement, Michael Vick, which eventually led to the trade that brought him to Arizona.
Under the NFL's revised rules, Kolb was required to see a doctor not affiliated with the Cardinals to have his condition independently evaluated. He underwent neurological tests Tuesday and said the visit "went good." He presumably was cleared to take the field Wednesday, but he wants to avoid suffering a setback.
"I want to be out there ASAP but at the same time try to protect my health," Kolb said, per the Republic.
Safety Kerry Rhodes took part in a full practice Wednesday, his first since breaking his foot Oct. 9. The Cardinals listed eight other players as limited: linebacker Clark Haggans (hamstring), tight end Rob Housler (shoulder), offensive tackle Brandon Keith (knee), linebacker Joey Porter (knee), wide receiver DeMarco Sampson (ribs), punter Dave Zastudil (biceps) and running back Beanie Wells (knee).