CBARP and Atypical behavior: PPI, whose decrease often reflects psychiatric disturbance (Swerdlow et al., 2000), was significantly increased at 120 dB in the BARP KO mice [genotype effect, F(1, 42) = 1.671, p = 0.2032; genotype × prepulse sound level effect, F(1, 42) = 0.062, p = 0.8042 in startle response at 110 dB; genotype effect, F(1, 42) = 6.296, p = 0.0160 in startle response at 120 dB] (Figure 5B).