What is ECoG?

Electrocorticography (ECoG) is a type of electrophysiological monitoring that uses electrodes placed directly on the exposed surface of the brain to record electrical activity from the cerebral cortex. ECoG is commonly used in epilepsy monitoring to identify seizure foci and guide surgical resection. It is also used in research to study brain function, such as cognitive processes, motor control, and sensory perception. Because the electrodes are placed directly on the brain, ECoG has a higher spatial resolution and signal-to-noise ratio compared to scalp EEG.