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  1. EEG (electroencephalogram) - Mayo Clinic

    May 29, 2024 · Brain cells communicate via electrical impulses, and this activity shows up as wavy lines on an EEG recording. Brain cells are active all the time, even during sleep. An EEG …

  2. Electroencephalogram (EEG): What It Is, Procedure & Results

    An EEG (electroencephalogram) is a test that evaluates brain function. Healthcare providers order an EEG to diagnose brain issues like epilepsy.

  3. Electroencephalogram (EEG) - Johns Hopkins Medicine

    An EEG is a test that detects abnormalities in your brain waves, or in the electrical activity of your brain. During an EEG, electrodes are pasted onto your scalp. These are small metal disks with …

  4. Electroencephalography - Wikipedia

    Electroencephalography (EEG) [1] is a method to record an electrogram of the spontaneous electrical activity of the brain. The bio signals detected by EEG have been shown to represent …

  5. What It's Like to Have an EEG Test Done - Verywell Health

    Dec 8, 2025 · An electroencephalogram (EEG) detects abnormal brain waves that cause seizures. EEG uses include diagnosing epilepsy, sleep disorders, and brain tumors.

  6. EEG Procedure - Simply Psychology

    Jun 12, 2025 · An EEG (electroencephalogram) records your brain’s electrical activity using painless electrodes placed on the scalp. It measures brainwaves like delta, theta, alpha, beta, …

  7. Electroencephalogram (EEG) - Harvard Health

    Mar 22, 2025 · An electroencephalogram (EEG) is a recording of the brain's electrical activity. Metal electrodes attached to the skin on the outside of the head transform electrical activity …

  8. EEG Test (Electroencephalogram): Purpose, Procedure, and Results - WebMD

    Dec 18, 2023 · An EEG, or electroencephalogram, is a test that records the electrical signals of the brain by using small metal discs (called electrodes) that are attached to your scalp.

  9. EEG - Penn Medicine

    Jan 13, 2025 · An electroencephalogram (EEG) is a test to measure the electrical activity of the brain. The test is done by an EEG technologist in your health care provider's office or at a …

  10. What Is an EEG? Electroencephalogram Test & Procedure Guide

    Learn about the Electroencephalogram (EEG) test, a non-invasive brain scan used for epilepsy diagnosis, seizure monitoring, and sleep disorders. Find out how it works, what to expect, and …