Fig. 3

Comparisons of percentages of prepulse inhibition of startle responses between mice with different startle amplitudes. Mice were divided into eight groups based on the amplitudes of their startle responses to 110-dB and 120-dB stimuli at each 12.5 percentile of the distribution (for the 110-dB stimulus, Groups 1–8; for the 120-dB stimulus, Groups 1′–8′). Percentages of prepulse inhibition of startle responses are presented for each group of mice showing different startle amplitudes in response to the 110-dB stimulus (a) and 120-dB stimulus (b). The statistical results for comparisons among the groups are shown in Additional file 1