Subcortical laminar heterotopia
Nov. 01, 2023
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Hypersynchronous seizure onset pattern preceding a high-frequency spike train of about 18 per second recorded with 4-contact foramen ovale electrodes and with selected bipolar scalp EEG derivations. The montage from foramen ovale is a closed circuit (see left top with the boxed numbers indicating the channel). (Contributed by Dr. Heinz Gregor Wieser.)