Figure 2.

Total distance travelled and preference index for preference tests for cagemate, neighbour, and stranger mice in the social interaction test apparatus. (a) Total distance travelled for preference tests. (b) Preference index for preference tests. Preference index defined as (time spent around cage (a))/(time spent around cage (a) + time spent around cage (b)). All data are presented as box plots. One-way ANOVA, followed by Tukey's test, was used for statistical analysis: (a) F_2,24 = 0.492; (b) F_2,24 = 7.048. n = 10 animals per trial.  ^∗p < 0.05,  ⁺p < 0.05.