NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,938 terms related to cancer and medicine.
- listen (ee-LEK-troh-en-SEH-fuh-loh-gram)
- A recording of electrical activity in the brain. It is made by placing electrodes on the scalp (the skin covering the top of the head), and impulses are sent to a special machine. An EEG may be used to diagnose brain and sleep disorders. Also called EEG.