The Bees crashed to their fourth defeat in six when they lost 2-1 at Stevenage on Saturday and are already 13 points off the automatic promotion pace.
This month they face home games with Colchester and Shrewsbury, either side of a trip to Bristol City, and Rosler demanded an upturn in performances during a lengthy dressing-room inquest.
"We had a good chat, an important chat," he said.
"Everyone in the dressing room knows the score and what is expected from everyone, including the staff, including me.
"Everyone knows the targets for the upcoming games."
- Sports & Recreation