Fig. 5

Differences between TD and ASD groups in sustained processing negativity (SPN) associated with periodic and non-periodic vowels. Central panels show the cortical localization of the TFCE clusters of significant group differences in differential responses (vowels minus control non-periodic non-vowel stimulus). The Coloured bar below the inflated surfaces indicates temporal extent for sources belonging to the TFCE cluster. The left and right panels show the “most significant” dipole sources selected based on the probability of the SPN group differences within the STG + region delineated by the red dashed line. Color bars below the images indicate vertices’ p-values averaged over the temporal extent of the cluster