Figure 2.

Human implanted electrode locations. Implanted electrodes are visible in X-ray CT images coregistered to the space of the patient’s MRI for the two epilepsy patients whose data was used in this competition. (A) Patient 1 had bitemporal 8-contact penetrating depth electrodes implanted along the axes of the left and right hippocampus. (B) Patient 2 had a 3 × 8 subdural electrode grid placed along the axis of the left temporal lobe and frontal lobe strip electrodes. Spheres represent approximate electrode positions due to post-craniotomy brain surface shift in the CT. Electrodes not used in these experiments have been omitted from this illustration.