Morris Water Maze (MWM) performance beginning 14 days after injury. A) Adjusted mean comparisons of latencies to find the hidden platform across days. There was a significant interaction between injury and sham vs. treatment with MPH (*P<0.03). B) Adjusted mean comparisons of latencies to find the hidden platform on each testing day. There was a significant interaction between treatment with MPH and testing day (*P<0.001). F=Female, M=Male, I=Injury, S=Sham, A=Vehicle, B=MPH