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MTLE-HS (intraoperative electrocorticographic findings)

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Intraoperative electrocorticographic (ECoG) recording with a 32-contact-grid (G) from lateral and inferior temporal lobe and with a 4-contact strip (S) electrode from the intraventricular hippocampus (see positioning on the model, right). In the illustrated ECoG, the interictally spiking contacts are marked with black circles in the schema. The craniotomy is indicated by the broken circle. At the bottom, a spontaneously occurring seizure discharge originating at S3 is depicted. (Contributed by Dr. Heinz Gregor Wieser.)