in supraregional development, which accounts for the divergence between auditory and visual development. The study by Walz et al. (2013) found that common brain regions in the same individuals were activated in independent auditory and visual oddball tasks. However, the supramodal features of the P3 response were found only during one-fifth of the entire duration of the response, which suggests that our long duration measures are inadequate to fully determine the trajectory of supramodal development, and its relation to development of modality-specific features. We know of no previous observation of divergent development between modality related systems. However, these results may be related to the decrease and subsequent increase of neural synchrony in adolescents in the same age range reported in Uhlhaas et al. (2009) and Uhlhaas and Singer (2011).