Fig. 4.

Behavioral analysis using Morris water maze. Df(10)1Yey/+ mice (n=16) (a–d) and Df(17)1Yey/+ mice (n=15) (e–h) as well as their wild-type littermates with equal sample sizes were examined, as described in Materials and Methods. (a, e) Latency to locate the platform (s, second), (b, f) path-length to locate the platform (m, meter) and (c, g) swimming speed (m/s, meter/second) during the learning trials of Morris water maze test. (d, h) The relative amount of time spent in different quadrants in the probe test on the second day after the end of the learning trials.