Mean (± standard error of the mean) time (sec) to locate either a hidden or visible platform in a water maze. For hidden platform, *p < 0.05 vs. traumatic brain injury (TBI) + STD + VEH and **p < 0.05 vs. all TBI groups. For visible platform, the SHAM, TBI + EE + VEH, and TBI + EE + GAL groups reached the platform quicker than the TBI + STD groups, regardless of treatment (p < 0.05). No other comparisons were significant (p > 0.05). STD, standard; VEH, vehicle; EE, environmental enrichment; GAL, galantamine.