Time courses of original data and extracted EEG components of one child (left side focus). Investigated electrode positions and focus of seizure are given in (A); example of original EEG recording at ipsilateral focus area electrode (blue), contralateral focus area electrode (red), ipsilateral near to focus area electrode (green), as well as ipsilateral far away from focus area electrode (cyan) are given in (B), and extracted δ- and α-IMFs are shown in (C). Black bold line designates onset of seizure at 5 min.