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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Epilepsia. 2016 Apr 8;57(5):679–687. doi: 10.1111/epi.13370

Figure 1.

Figure 1

Intracerebral signals recorded with multichannel stereo-EEG recording electrodes in a patient with a right frontal cortical dysplasia during presurgical monitoring. The onset of the seizure (arrows) correlates with low-voltage fast activity in the epileptogenic zone (contacts A3, B3, B4, C4, C5, C6, and D3 recorded with multichannel depth electrodes). The activity recorded at C5 is magnified below. The C5 signal frequency content at ictal onset illustrated in the power density graph demonstrates the presence of fast activity at 30–40 Hz (courtesy of Stefano Francione).