EEG

Definition / meaning of EEG

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 electroencephalogram.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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