Figure 2.

SEP (VEP-free) P100 results. A, SEP P100 group differences in the frontal region (averaged activity of 6 electrodes). TD showed enhanced positivity for Emotion Task compared with Gender Task (p = 0.044, BF₊₀ = 3.044) and compared with Emotion Task in ASD (p = 0.047, BF₊₀ = 3.049). B, Boxplots with individual data points of the P100 SEP amplitudes in the frontal region, in emotion and gender tasks, for the TD and ASD groups. C, Topographical maps of the P100 electrophysiological activity, revealing increased positivity in frontoparietal regions during emotion processing in TD but not ASD. D, Source reconstruction of the P100 SEP (VEP-free) component highlights active voxels in Brodmann area 6, primary and secondary somatosensory cortices, and prefrontal areas. *p < 0.05 (two-tailed).