electrocorticography
Pronunciation: ee-LEK-troh-kor-ti-KOG-rah-fee
Invasive recording technique that places electrodes directly on the brain surface to measure electrical activity with high spatial and temporal resolution.
Full Definition
Electrocorticography (ECoG) is an invasive neurophysiological monitoring technique that involves placing electrode arrays directly on the cortical surface or within brain tissue. This method provides superior signal quality compared to scalp EEG by bypassing skull-related signal attenuation and offers exceptional temporal resolution in the millisecond range. ECoG is primarily used in clinical settings for seizure localization in epilepsy patients and for brain mapping prior to neurosurgical procedures. The technique has also gained importance in brain-computer interface research due to its ability to record high-fidelity neural signals for controlling external devices.
Usage
Usage note: Commonly abbreviated as ECoG; distinguish from surface EEG in clinical documentation.
In Context
- "Electrocorticography recordings revealed gamma oscillations during language processing." — Neuroscience research paper
- "The patient underwent electrocorticography monitoring for seizure localization before resection." — Clinical epilepsy report