A functional study of a somewhat similar oddball task using fMRI (Rubia et al., 2010) reports increases of activation in some brain regions and decrease of activations in others with development, corresponding to increased relative frontal activity (Rubia et al., 2010, Table 4). This, as well as additional results of the fMRI studies mentioned above, suggest that the spatial distribution of the generators of theta EROs changes with age; this may be responsible for the topographical changes in the relative strengths of the power at the midline electrodes studied (not illustrated here).
