We did not observe any memory impairments in the s-SOR when Tat-P4 was injected 5 h after sampling the objects [One-sample t-test (Tat-S, t = 13.88), p < 0.0001; one- sample t-test (Tat-P4, t = 7.377), p = 0.0003], indicating that Tat-P4 injected animals were able to learn the similar condition as successfully as Tat-S-injected animals [Tat-S vs. Tat-P4 paired t-test (t = 0.2985), p = 0.7754, n = 7] (Figure 3C). This evidence concerns the gene TAT and memory impairment.