Figure 2.

Water maze learning in controls and runners trained with two trials per day (four-trial data are not shown here, but see description in Results). Mice were trained over 6 days to find the hidden platform in the Morris water maze. A significant difference developed between the groups (P < 0.04) in path length (a) and (P < 0.047) in latency (b). Results of probe test 4 hr after the last trial on day 6 (c).