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

Figure 3

ERSP of P3 (a, b) and P4 (c) electrodes for total mean of samples of the neutral (a), and angry (b), and (c) faces signals in interval of 3 seconds (plus a baseline activity of 500 ms before the event) for ASD and control groups that showed significant spectral perturbations. In ERSP image, the upper panel presents the ERSP (Event-Related Spectral Perturbation) data in dB, with mean baseline spectral power (in dB) subtracted at each time in the epoch. Upper left marginal panel presents the mean spectral power during the baseline period (blue). Marginal panel under the ERSP image shows the maximum (red) and minimum (blue) ERSP values relative to baseline power at each frequency.

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