High-Frequency EEG Variations in Children with Autism Spectrum Disorder during Human Faces Visualization

Figure 2

ERSP of (a) F3 and (b) F4 electrodes for the total mean of samples for angry expression signal in an interval of 3 seconds (plus a basal activity of 500 ms before and after an event) for ASD and control groups that showed significant variations or spectral perturbations. The ERSP image in the upper panel presents the ERSP (Event-Related Spectral Perturbation) data in dB, with mean baseline spectral power subtracted at each time in the epoch. The upper left marginal panel presents mean spectral power during the baseline period (blue). The marginal panel under the ERSP image shows the maximum (red) and minimum (blue) ERSP values relative to baseline power for each frequency.

(a)

(b)