Electroencephalogram (noun)

1. A graphical representation of the electrical activity of the brain, recorded by electrodes attached to the scalp and used in the diagnosis of various brain disorders.
2. An EEG.

Origin:

From electro- + encephalo- + -gram.

Examples:

1. The doctor performed an electroencephalogram to diagnose the patient's seizures.
2. The electroencephalogram showed abnormal brain activity in the patient.
3. The electroencephalogram was used to monitor the brain activity during the surgery.
4. The study analyzed the electroencephalogram data to understand the brain's electrical activity.
5. The patient's electroencephalogram results showed evidence of sleep disturbances.