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What is an electroencephalogram test (EEG)?

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An EEG, or electroencephalogram, is a test that records the electrical signals of your brain. Electrodes, or sensors, that go on the scalp detect the signals and send them to a polygraph machine that records the activity.

SOURCE: National Migraine Association.

Reviewed by Stephen D. Silberstein on July 17, 2017

SOURCE: National Migraine Association.

Reviewed by Stephen D. Silberstein on July 17, 2017

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Why are electroencephalogram tests (EEG) used to test for headaches?

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