EEG (electroencephalogram) - Mayo Clinic An electroencephalogram (EEG) is a test that measures electrical activity in the brain This test also is called an EEG The test uses small, metal discs called electrodes that attach to the scalp Brain cells communicate via electrical impulses, and this activity shows up as wavy lines on an EEG recording
EEG (Electroencephalogram): What It Is, Procedure Results In an EEG, electrodes placed on your scalp track your brain activity The electrodes send information to a machine that records brain activity EEGs measure your brain activity Your healthcare provider may order this test to diagnose brain conditions like epilepsy What is an EEG?
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 the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex [2]
Electroencephalography | Definition, Procedure, Uses | Britannica electroencephalography, technique for recording and interpreting the electrical activity of the brain The nerve cells of the brain generate electrical impulses that fluctuate rhythmically in distinct patterns
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 thin wires They detect tiny electrical charges that result from the activity of your brain cells
EEG (Electroencephalogram): Purpose, Procedure, and Risks Read on to learn about an EEG, including why it’s done, what to expect, and the possible risks What is an EEG? An EEG tracks and records brain wave patterns Small flat metal discs called
Electroencephalography - Neurologic Disorders - MSD Manual Professional . . . In electroencephalograph (EEG), 20 electrodes are distributed symmetrically over the scalp to detect electrical changes in the brain that are associated with: Seizure disorders Sleep disorders Metabolic or structural encephalopathies The normal awake EEG shows 8- to 12-Hz, 50-muV sinusoidal alpha waves that wax and wane over the occipital and parietal lobes and > 12-Hz, 10- to 20-muV beta
EEG (Electroencephalogram): Uses, Procedure, Risks An electroencephalogram (EEG) test is used to check for seizures and diagnose epilepsy EEG can also be used to diagnose other medical conditions like sleep disorders or brain injuries, as well as to monitor brain activity during surgery or when a person is in a coma An EEG records electrical activity in the brain