Glossary
Electroencephalography (EEG)
elec·tro·en·ceph·a·log·ra·phy, uh-leck-troh-en-seff-uh-LOG-ruh-fee, noun
: the recording of the brain’s electrical activity, usually measured non-invasively through electrodes placed on the scalp.
The apparatus that detects and records this activity is an electroencephalograph, and the tracing it produces is an electroencephalogram — both abbreviated EEG. Electroencephalography is widely used in medicine and neuroscience, and is a common signal source for brain–computer interfaces.
Example:
“Perri’s setup begins with a headset that measures the electrical activity in her brain, known as an electroencephalogram (EEG for short).” —Christopher Cruz, Rolling Stone, 10 July 2024
Related terms: brain–computer interface, hardware