After 4 months of enrichment, EE animals display superior learning and memory compared to SE and SC groups. (A) EE and SE animals swim significantly shorter distances than SC groups during the hidden platform phase of MWM. (B) EE rats display significantly more platform crossings during the probe trial than SE and SC groups. (EE, n = 6; SE, n = 6; SC, n = 4) (C) EE animals outperform both SE and SC groups in NOR. (EE, n = 12; SE, n = 12; SC, n = 8).