Using protocol B, four-way RM ANOVA for factors ‘genotype’, ‘treatment’, ‘prepulse intensity’ and ‘interstimulus interval’ detected no main effect of ‘genotype’ on the PPI performance of mice [F(1,22) = 0.4, p = 0.5] (Fig. 3A–F). However, the factor ‘treatment’ had a<a href='