(A) On day 1, WT and NS mice do not prefer one of two identical objects over chance. Data in (A)–(C) are means + SEM, and symbols are exploration times from individual animals (n = 8 WT and 7 NS mice). WT: p = 0.85; NS: p = 0.28 (one-sample t test of object 1 exploration time versus 15 s [dotted line]).
(B) On day 3, WT mice prefer to explore a novel object, whereas NS mice explore both objects equally. WT: **p = 0.0029; NS: p = 0.56 (one-sample t test of novel object exploration time versus 15 s).
(C) WT and NS mice spent equal time accumulating 30 s object exploration time on both days. Day 1: p = 0.62; day 3: p = 0.54 (unpaired t test).
(D) NS mice display impaired theta-burst stimulation (TBS)-induced LTP. Insets show the average of two EPSCs before (WT: 1, NS: 3) and after (WT: 2, NS: 4) TBS, and their overlay. Data are means + SEM (n = 8 neurons) normalized to the baseline amplitude. ****p < 0.0001, effects of genotype and time; interaction p = 0.57 (two-way ANOVA).