Wide spacing between electrode points, enabling a broad monitoring range. Utilized for epileptic foci resection surgeries to confirm the location of the lesion and trace the pathways of abnormal wave-forms within the brain.

Decreased distance between electrode points, providing high monitoring precision. Applied in Stereo-electroencephalography (SEEG) fro precise localization of epileptic foci. It can also confirm whether the epileptic focus affects functional areas of the brain, providing guidance for future treatment.