Figure 3
Sources of EEG variability. Column show results for the different stimulus categories checkerboards and gray blanks. Rows show different aspects of time-frequency power and variability. Evoked Power: Time-frequency analysis of ERPs. Induced Power: Time-frequency analysis of induced (i.e., single-trial based) responses. Induced Power Variability: The standard deviation of power values across trials from single-trial time-frequency analyses. Inter-trial phase coherence: An index of phase coherence between trials. Each panel depicts the group difference control group—ASD group. Opaque colors indicate a significant difference at the given time-frequency bin using a Wilcoxon test with an alpha criterion of 0.05. We find that the most consistent differences between groups are reflected in induced responses and their variability, but not in evoked responses or in phase coherence.
