PMC8518698_01
Ictal EEG with FOs that were recorded at 11 days of age. (A) Raw EEG traces, which are analyzed as shown in (B). (B) Time-frequency analysis of the EEG data at Fp2-C4 that is shown in (A), using the Complex Demodulation Method. The gray trace is unfiltered, and the blue trace is applied with a high pass filter at 80 Hz. The area indicated by the square corresponds to expanded data shown in (C). (C) The detected high-gamma (71.4-100 Hz) activities appear to be temporally independent of the low-gamma peaks.
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F1
At 10 and 11 days of age, we found obvious fast activities superimposed on the ictal delta activities using visual inspection (Figure 1A). Among them, we detected high-gamma (71.4-100 Hz) oscillations that had spectral peaks separate from those of low-gamma activities in the ictal EEG on 11 days of age (Figures 1B,C).