Menschliches Gehirn mit aufgezeichnetem Elektroenzephalogramm EEG-Illustration - Stock-Grafiken

Human brain with recorded electroencephalogram EEG illustration. An electroencephalogram ( EEG ) is a test that measures electrical activity in the brain using small, metal discs ( electrodes ) attached to the scalp. Brain cells communicate via electrical impulses and are active all the time, even during asleep. This activity shows up as wavy lines on an EEG recording.