Fig. 4
From: Withdrawal seizures vs on-medication seizures: an intracranial EEG recording case report
Intracranial EEG monitoring. a 1+2.- Seizure occurring 10 h after implantation. Cessation of interictal activity and a burst of LVFA evolving into rhythmic high voltage spike activity. Note the simultaneous onset of seizure in all regions involved. b 1-3. Seizure occurring from 24 h after impanation before readministration of ASM. Cessation of interictal activity, seizure onset of LVFA in the temporal pole (arrow) occurring 45 s before involvement of the PHG, and Hippocampus. c 1-2. Seizures occurring after readministration of ASM- Habitual seizure onset with LVFA in the temporal pole (arrow) - last for 47 s without involving other regions and without apparent clinical signs. Referential montage: S65-S72, Temporal pole strip; S73-S80, PHG strip; D81-D83, AH electrodes; D84-D86, MTG electrodes; D87-D89, PH electrodes; D90-D92, Posterior MTG. Time scale, 15 mm/s; sensitivity, 50 μv/mm; filter band pass, 0.5-70 Hz. LVFA low voltage fast activity, TP temporal pole, PHG parahippocampal gyrus, AH anterior hippocampus, MTG middle temporal gyrus, PH posterior hippocampus