Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Interictal and ictal HFOs inside the seizure onset zone of two neighboring electrodes. (A) High-frequency oscillations (HFOs) (bandpass filtered at 80–500 Hz) in waveforms occur intermittently in interictal periods and occur continuously in the ictal period. (B) Time–frequency analysis reveals that the increases in ripples and fast ripples start before ictal onset (the green arrow point). The corresponding sites of the electrodes are shown on the left.
