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  1. EEG (electroencephalogram) - Mayo Clinic

    May 29, 2024 · An EEG records the electrical activity of the brain through electrodes put on the scalp. EEG results show changes in brain activity. This may help diagnose brain conditions …

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

    Sep 29, 2025 · An EEG (electroencephalogram) is a test that evaluates brain function. Healthcare providers order an EEG to diagnose brain issues like epilepsy.

  3. Electroencephalography - Wikipedia

    The recording of these signals is referred to as electrocorticography (ECoG), subdural EEG (SDE), intracranial EEG (iEEG), or stereotactic EEG (SEEG). The signal recorded from ECoG …

  4. EEG (Electroencephalogram): Uses, Procedure, Risks

    Feb 25, 2025 · An EEG is a test that records the electrical activity in your brain. It is most often used to diagnose epilepsy, but it can also be used for head injuries, brain tumors, stroke, and …

  5. 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.

  6. EEG (Electroencephalogram): Purpose, Procedure, and Risks

    Nov 9, 2021 · An EEG is a test that measures your brain waves and helps detect abnormal brain activity. The results of an EEG can be used to rule out or confirm medical conditions.

  7. Electroencephalography (EEG) Prep, During, After, Results, Cost

    Learn more about the electroencephalogram (EEG), a test that measures brain waves and evaluates brain disorders. Learn more about the test, preparation, results, and more.

  8. Electroencephalography - Neurologic Disorders - MSD Manual …

    The EEG is examined for asymmetries between the 2 hemispheres (suggesting a structural disorder), for excessive slowing (appearance of 1- to 4-Hz, 50- to 350-muV delta waves, as …

  9. EEG: MedlinePlus Medical Encyclopedia

    Jan 13, 2025 · An electroencephalogram (EEG) is a test to measure the electrical activity of the brain.

  10. 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 …