Keane, who takes his side to old club Manchester United on Saturday, said: "Blame me. I take full responsibility for what happens on the pitch.
"All this result has done is confirm to me there is still a massive job to be done.
"Even when we were promoted, I never believed the people who said I was the greatest thing since sliced bread.
"I have only been a manager for two minutes but we have to respond in the right way. It's up to me to get the job done."