Arsenal manager Mikel Arteta says his players used their opening day loss to Brentford to overcome Thomas Frank's side at the Emirates on Saturday.
The Gunners kept their top-four push alive with a 2-0 victory in front of their home supporters.
"That hurt and that scar was there. I certainly felt it. I tried to transmit it to the players that we should not forget how we felt after the game," said Arteta.
"We understood what happened and the results after that. We analysed it with the context we were in and it was really difficult to prepare that game.
"The players that we had on that pitch is nothing to do with the players that we had today. But we learned a lot as a team.
"I think I said it when we played Norwich [in September] and we won our first game after three defeats, that was an invaluable time for me to understand the people that we have at the club, the players and the staff around here.
"The more difficult the situation was getting, the more united and close and convinced we were that together we could do it. That was a game-changer I think, because it really united everybody. You probably learn more in difficult moments than the good ones as well."
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