Population statistics of EIT images. Sagittal, anterolateral and dorsal views (left) of significant active voxels (red) in the reconstructed δσ across rats at 4 ms relative to the peak EEG amplitude of the ictal SWD (p < 0.03125, N = 5). Two coronal slices which transect the maximally activated areas of cortical tissue, obtained at 2.0 and 4.0 mm posterior to bregma, are also provided (right). GM, grey matter; WM, white matter.