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 An EEG (electroencephalogram) is a safe, painless test that measures brain activity Your healthcare provider may order an EEG to find out why you have certain symptoms like seizures, confusion or memory loss They may use the term EEG to describe both the test (electroencephalography) and test results (electroencephalogram)
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]
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
Electroencephalogram (EEG) - NHS An electroencephalogram (EEG) is a recording of brain activity During this painless test, small sensors are attached to the scalp to pick up the electrical signals produced by the brain These signals are recorded by a machine and are looked at by a doctor
Electroencephalogram (EEG) - Harvard Health 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 into patterns, commonly called brain waves
Electroencephalography - Neurologic Disorders - MSD Manual Professional . . . If a seizure disorder is suspected and the routine EEG is normal, maneuvers that electrically activate the cortex (eg, hyperventilation, photic stimulation, sleep, sleep deprivation) can sometimes elicit evidence of a seizure disorder Nasopharyngeal leads can sometimes detect a temporal lobe seizure focus when the EEG is otherwise uninformative