brain waves
General term for the electrical activity of the brain, used in both scientific and everyday language.
We measure brain waves during sleep.
electroencephalogram; EEG
Medical term for the recording of brain waves; often abbreviated as EEG.
The doctor examined the EEG to check for abnormalities.
The doctor measured the patient's brain waves.
After taking the strong medicine, his brain waves became irregular.
They recorded his brain waves overnight during sleep.
He underwent an EEG examination to find the cause of his seizures.