electrocorticography
Pronunciation: ee-lek-troh-kor-ti-KOG-rah-fee
Also written as: ECoG — electrocorticography
Direct recording of electrical activity from the brain's cortical surface during surgery.
Full Definition
Electrocorticography (ECoG) is an intraoperative neurophysiological monitoring technique that records electrical activity directly from the exposed cortical surface using electrode grids or strips placed on the brain. This real-time monitoring helps identify functional brain areas and seizure foci during neurosurgical procedures, particularly in epilepsy surgery and tumor resections near eloquent cortex. ECoG provides superior spatial resolution and signal quality compared to scalp EEG recordings.
Usage
Usage note: Abbreviated as ECoG; distinct from standard EEG which uses scalp electrodes.
In Context
- "Intraoperative electrocorticography confirmed complete seizure focus removal." — epilepsy surgery report
- "Electrocorticography monitoring was used to preserve motor function during tumor resection." — operative note