electrocorticography
Pronunciation: ee-LEK-tro-kor-ti-KOG-ra-fee
Also written as: ECoG — electrocorticography
Recording of electrical activity directly from the brain surface using electrodes placed on the cortex.
Full Definition
Electrocorticography (ECoG) is a neurophysiological monitoring technique that records electrical activity directly from the exposed surface of the brain using an array of electrodes. This invasive procedure provides higher spatial resolution and better signal quality compared to scalp EEG, making it valuable for epilepsy surgery planning and brain-computer interface research. The technique requires craniotomy and carries surgical risks but offers unprecedented access to cortical signals for both clinical and research applications.
Usage
Usage note: Often abbreviated as ECoG; distinguish from surface EEG which records from the scalp.
In Context
- "The surgical team prepared for electrocorticography to map eloquent cortex before tumor resection." — Surgical report
- "Electrocorticography data revealed gamma oscillations in the motor cortex during movement preparation." — Clinical study