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An electroencephalogram (EEG) is a noninvasive diagnostic test that measures your brain’s electrical activity.
Technicians at Dignity Health perform EEGs in Central California to diagnose or monitor neurological conditions that can affect your brain. For expert care, Find a Doctor at:
Your doctor may recommend an EEG test to detect or monitor:
An electroencephalogram is a minimally invasive test you can get at a doctor’s office, a hospital, or a laboratory. An experienced EEG technician performs it and sends the results to your doctor. Expect an EEG test to take between one to several hours, depending on why you need it. If you’re getting an EEG for a sleep study, the test could take eight hours or more. If you need a longer EEG scan, your doctor may ask you to wear an appliance for up to three days as you go about your daily life.
For most EEGs, you will lie down on a bed or a recliner and sticky electrodes will be placed over your scalp and possibly parts of your face. The EEG technician will connect the electrodes to a recording machine with wires. You’ll have to lie still with your eyes closed and may be asked to do certain activities, such as look at a flashing strobe light or breathing fast.
Before having an EEG, you’ll get specific instructions on how to prepare. Usually, you should:
An EEG is generally safe. The test is often used to diagnose epilepsy; parts of the procedure, such as viewing a strobe light, may trigger a seizure. The EEG technician is trained to respond should this happen.
Right after your EEG, you can return to your normal activities. If you have a seizure during the test, the technician will give you specific instructions.
An EEG is often used as a seizure test to help your doctor determine if you have epilepsy. It also diagnoses many other brain conditions. Doctors at Dignity Health Central California will review your EEG to diagnose your condition, taking you one step closer to getting the personalized treatment you need. Treatments for brain conditions can improve your quality of life and may even cure your condition.