What is an EEG?
An electroencephalogram (EEG) is a test that detects electrical impulses in the brain, which provides important information about the health and functioning of the brain.
What does the test show?
An EEG is a valuable tool that helps determine the cause of many problems. With an EEG, health care professionals can diagnose, monitor, or rule out conditions such as epilepsy, memory loss, dementia, brain injury, and effects of certain diseases on the brain.
Who performs the testing?
A qualified neurologist supervises the testing and interprets the results. A technologist performs the test.
What happens during an EEG test?
Small metal disks (electrodes) are secured to certain areas of your scalp with an adhesive jelly. The electrodes are connected to a machine which records the electrical activity and produces a graphic record. To measure changes of electrical activity on the brain, you may be asked to perform a variety of simple functions, such as rapid breathing, opening and closing your eyes, or relaxing to the point of falling asleep. The total test takes approximately 90 minutes.
When will the results of my EEG test be available?
The results are typically available within three to five days. These results will be sent to your personal physician, who will make a diagnosis based upon the neurologist's interpretation.
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