Electrocorticography
Pronunciation: ih-lek-troh-kor-ti-KOG-rah-fee
Also written as: ECoG — Electrocorticography
Direct recording of electrical activity from the brain surface using electrodes placed on the cortex. Used for precise seizure localization during epilepsy surgery.
Full Definition
Electrocorticography (ECoG) involves the direct recording of electrical activity from the cerebral cortex using electrodes placed directly on the brain surface during neurosurgical procedures. This technique provides superior spatial resolution and signal quality compared to scalp EEG, allowing for precise identification of epileptogenic tissue and functional brain areas. ECoG is commonly used during epilepsy surgery to map seizure onset zones, define eloquent cortex, and guide surgical resection boundaries. The procedure requires craniotomy and is performed in specialized epilepsy surgery centers.
Usage
Usage note: Often abbreviated as ECoG in clinical documentation.
In Context
- "Intraoperative electrocorticography confirmed the seizure onset zone before cortical resection." — Surgical report
- "Electrocorticography provided high-resolution mapping of both epileptogenic and eloquent cortical areas." — Neurosurgical case study