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Patient #4. (a,b) Scalp EEG waveforms of interictal spike #1 and #2; (c,d) Right-view scalp potential maps, estimated cortical potential distributions, and top 50% cortical activities superimposed onto the cortical surface at 6 time points of interictal spike #1 and #2; (e,f). The epileptogenic foci revealed by the CPI analysis of the peak activity of interictal spikes #1 and #2 in right view; (g). Illustration of subdural electrodes, SOZ determined by ECoG, and CPI maximum.
