Stereoencephalography or Stereo EEG

Stereo EEG is a diagnostic tool used for the treatment of epilepsy. It allows for simultaneous exploration of electrical activity on the surface of the brain and deep within it — all while a patient is experiencing a seizure. This technique has several advantages:

• Enables precise location of epileptic focus
• No craniotomy is required; very thin recording electrodes are inserted via tiny openings in the skull
• Especially useful in cases where the epilepsy is difficult to localize
• Allows for longer monitoring periods than conventional subdural electrodes — up to four weeks