Stereotactic EEG
Pronunciation: ster-ee-oh-TAK-tik
Minimally invasive technique using depth electrodes to record brain activity directly from suspected seizure regions.
Full Definition
Stereotactic EEG (sEEG) is an invasive monitoring technique that uses stereotactically implanted depth electrodes to record electrical activity directly from brain tissue. This method allows precise localization of seizure onset zones, particularly in cases where surface EEG and imaging studies are inconclusive. The procedure involves computer-guided placement of multiple thin electrodes through small burr holes, enabling recording from deep brain structures while minimizing surgical trauma compared to traditional grid and strip electrode implantation.
Usage
Usage note: Often abbreviated as sEEG in clinical documentation; capitalize EEG portion.
In Context
- "Stereotactic EEG was performed to better define the seizure onset zone in this patient with normal MRI." — Neurosurgical consultation note
- "The stereotactic EEG findings confirmed seizure onset in the right insula." — Epilepsy monitoring unit report