Hippocampography Guides Consistent Mesial Resections in Neocortical Temporal Lobe Epilepsy

Figure 2

Intraoperative hippocampal electrocorticography (hippocampography). (a) Hippocampography technique. Immediately following resection of the temporal pole prior to possible hippocampectomy, a depth electrode (white wire) placed in an anteroposterior orientation runs parallel to the mesial wall of the inferior horn of the lateral ventricle. The electrode contains 4–8 recording sites with distal contacts located posteriorly by the hippocampus. (b) Hippocampography EEG. Epileptiform discharges (arrows on spike-wave discharges) on referential montage. Contact #1 is posterior and contact #6 is anterior.

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