Comparing outcomes of stereo-EEG and subdural grids in epilepsy surgery


  • Subdural electroencephalography (SDE) evaluations are more likely to be followed by resective epilepsy surgery and post-surgical complications, and stereotactic electroencephalography (SEEG) is more likely to result in seizure freedom.

Why this matters

  • Intracranial electroencephalography (iEEG) recordings are often used to determine epilepsy localization, but the comparative effectiveness of the 2 main iEEG modalities – SDE and SEEG – has not been well studied; thus, it is difficult to make recommendations concerning application.

  • This study provides evidence that can aid clinicians in shared decision-making with patients concerning modality choice.