The Dons found themselves four goals down at half-time against Burton on Tuesday night and ended up on the end of a 6-2 hiding.
Brown is demanding a response from his shell-shocked players, starting with this weekend's trip to Valley Parade.
"We have got to go to Bradford on Saturday and show the fans what it means to pull on that blue and yellow shirt," said Brown.
"The issue is about us defending as a team, it is not just the back four and the goalkeeper.
"We will apportion blame between the side and I take my fair share of that. I brought the players in and it is my responsibility to get it right."