Fig. 1

WT and Fmr1^−/y rats move similar distances and at similar speeds while foraging in a novel environment over the two days, but Fmr1^−/y rats visit more of the environment than WT rats. A Schematic of the recording protocol (Top) and example trajectories from a WT (black) and an Fmr1^−/y rat (red). B Total path length decreased across the three sessions within a day for both WT and Fmr1^−/y rats, but there was no difference between genotypes or across days (session-in-day p < 0.0001; day p = 0.069; genotype p = 0.967). C Both WT and Fmr1^−/y rats showed good coverage of the environment in all recording sessions. Fmr1^−/y rats visited a significantly higher proportion of the environment than WT rats (*genotype p = 0.001). There was also a decrease in exploration across sessions within each day, but not across days (session-in day p = 0.001; day p = 0.615). Data points depict rat group means; error bars depict SEM; Statistical analyses used 3-way ANOVA with genotype (between subjects), day (within subjects) and session-in day (within subjects); n_WT = 7 rats, n Fmr1^−/y = 7 rats. Pale yellow and pale purple backgrounds denote data from Day 1 and Day 2, respectively