Figure 1

Chronic restraint stress increases immobility behavior only in WLIs while environmental enrichment reduces immobility behavior in both strains. The presence or absence of immobility behavior (floating) was registered every 5 s (bins) in the second day of the FST (a) immediately following the chronic restraint stress procedure. (b) immediately after the environmental enrichment. Data are presented as mean±s.e.m. **P<0.01 Bonferonni adjusted post hoc, ⁺P<0.05 Student’s t-test. CRS, chronic restraint stress; FST, forced-swim test; WLI, Wistar Kyoto Less Immobile; WMI, Wistar Kyoto More Immobile.