Figure 6

Results for preictal interval identification. The preictal interval was found for 37 patients (90%) and 116 seizures (51%). These results correspond to the evidence of preictal interval found for categories 3 and 6 (together) and category 5, for all groups of features. The results for category 5 were presented for a given seizure when categories 3 or 6 have not been previously assigned in any of the group of features. Asterisks indicate seizures for which preictal patterns have also been identified in a study using ECG data concurrent with the EEG data under analysis (considering that these preictal intervals started before the SPH)²⁶. Preictal patterns were found in both EEG and ECG in 22% of the seizures analysed in this study.