Electroencephalography
AB Life care Hospital
What Is an Electroencephalogram (EEG)?
An EEG (electroencephalogram) measures the electrical activity in your brain. Healthcare providers often use this test to diagnose conditions like epilepsy.
Providers may use the term EEG to describe the test itself and what it shows.
During this test, a technician places small, metal disks (electrodes) on your scalp. The electrodes connect to a machine that records the electrical signals your brain cells (neurons) use to communicate. Tracking these signals shows how well different parts of your brain are working.
How long does an EEG take?
A routine EEG may take 20 to 30 minutes to complete. The time depends on the type. But your provider will tell you in advance so you know what to expect.
