Arsene Wenger is confident his players will give a positive response to Saturday's heavy defeat to Liverpool.
Arsenal face four home games in 11 days against Manchester United, Liverpool, Bayern Munich and Sunderland - a potentially decisive period.
"It is about how well we do at home at the Emirates, of course starting on Wednesday"
The Gunners went on an 11-game unbeaten run after a defeat at Manchester City in December and Wenger thinks a similar run will be needed for Arsenal to maintain their title challenge.
"Our performance was poorer on Saturday than at Man City," Wenger told Arsenal Player. "But I'm confident we will respond in a positive matter on Wednesday night.
"I think it's a shame that we couldn't turn up with a better performance. After 10 minutes we conceded two goals on set-pieces, that just shows that the level of concentration was not there and that when nobody takes responsibility in these kind of situations it's always a bad sign.
"It is about how well we do at home at the Emirates, of course starting on Wednesday. Recently we have been very good defensively at home and offensively as well. That is what we want to show on Wednesday night."