Abstract
In this study, we compared the propagation configuration of epileptiform discharges in the onset and termination of ictal period. We calculated the average value of the top 1% of the maximum cross correlation values of each channel-to-channel of the electrocorticography. As shown in this figure, the value was rapidly rising at the onset of seizure. Then, it was rapidly reduced in about 10 seconds despite the epileptiform activities continued. It increased again from around 110 seconds, then the seizure ended at around 150 seconds. The results of the connectivity analysis show that the propagation configuration differed greatly between the onset of seizure and at the seizure termination.
