noun Medicine/Medical.
- an instrument for measuring and recording the electric activity of the brain.
noun
- an instrument for recording the electrical activity of the brain, usually by means of electrodes placed on the scalp: used to diagnose tumours of the brain, to study brain waves, etcAbbreviation: EEG See also brain wave
n.
- An instrument that generates a record of the electrical activity of the brain by measuring electric potentials using electrodes attached to the scalp.