Fig. 2: ERP waveforms and individual features of responses to standard tones and deviants.

A The grand average waveform for the TD (blue) and ASD (red) group of ERP responses to standard tones and the three deviants (frequency, duration, and combined) without subtraction at the three-drug administrations (row). Dashed lines indicate the stimulus onsets. Components where a significant group difference was observed were marked with asterisks. B Individual scatter plots of the P1 and N1 amplitudes (µV) for the TD (blue) and ASD (red) group as a function of the stimulus condition at placebo/drug administration. The comparisons between stimulus conditions were achieved by paired-samples t test and corrected using the Benjamini–Hochberg method. *, the difference is statistically significant with corrected p < 0.05; **, the difference is statistically significant with corrected p < 0.01; ***, the difference is statistically significant with corrected p < 0.001. Error bars show SD.