Penn State's Clark discusses concussion

Posted by ESPN.com's Adam Rittenberg

Penn State quarterback Daryll Clark remembers the hit to the head he absorbed on a 7-yard run late in the third quarter against Ohio State.

He remembers Nittany Lions center A.Q. Shipley holding up two fingers and asking him to count them. He remembers staying in the game for seven more plays after the collision. But shortly after heading to the Penn State sideline, Clark's memory faded.

"There was a big gap," Clark said this morning. "I looked up at the clock and it was 13 [minutes] and the next time I looked up it was six minutes, in a matter of seconds."

Clark sustained a mild concussion on the play and blacked out for several minutes of the fourth quarter, the stretch where Penn State forced a Terrelle Pryor fumble and took the lead on a 1-yard scoring sneak by backup quarterback Pat Devlin. Though Clark appeared upset when TV cameras spotted him on the sideline, he admitted he didn't even know what was happening at the time.

The junior has been cleared by doctors after going through a series of tests. He's practicing fully this week and is expected to start Saturday at Iowa (ABC, 3:30 p.m. ET).

"It was really weird," Clark said. "I've never had something like that happened to me before, just blacked out and lose a couple minutes of your life. I'm very anxious to go out and get that first hit and get the jitters out and see where I am. I'm going to get hit in the game, and that will let me know where I am."

Though Clark didn't want to come out against Ohio State and continued to function immediately after the hit, he knew something was wrong.

"I remember having a big ringing in my head," he said. "I kind of knew this might be a concussion because that ringing did not disappear until the next day."