a slight trendp = 0.054
The Kruskal–Wallis multiple comparison test (in chronological order) showed that the out/in ratio of the OLs in the 5 seizure-free cases with low-frequency high-amplitude periodic spikes only had a slight trend of decline in the gamma band during the post-ictal period (p = 0.054), but that in the 5 seizure-free cases with low-voltage fast activities had a significant decline (vs. late-ictal: p = 0.035); such a difference could not be found in the not-seizure-free cases in either of the two EEG onset patterns. 3.5.