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Electroencephalogram (EEG)

Electroencephalogram (EEG) at Beaumont

An Electroencephalogram (EEG) is a recording of the electrical activity of the brain. It is a non-invasive test which is well tolerated. Electrodes are applied on the scalp and brain wave activity is recorded using highly sensitive computer equipment. A video is also recorded to capture any clinical signs of seizure activity that may occur during the study. We offer a wide variety of EEG testing which includes, a standard routine EEG, ambulatory EEG from 24 hours up to 72 hours, outpatient extended EEG from 2-6 hours, and outpatient EEG with anesthesia. EEG’s are completed on Adult and Pediatric (site specific) patients.


What to Expect

  • Your head is measured and marked for electrode placement
  • The scalp is prepped using a gel-like substance to remove any excess oils and then a conduction cream is applied to hold the electrodes in place. Gauze maybe used to wrap the head to secure the electrodes. 
  • You will then be asked to relax and lie still with your eyes closed for most of the test.
  • During the test, a strobe light will be flashed on and off (photic stimulation) and you may be asked to take repeated deep and fast breathes (hyperventilation).
  • Drowsiness and sleep are encouraged during the test. Sleep deprivation may be indicated by your physician. 

Patient Preparation

  • Please have clean hair without any hair styling products such as oil, gel or hairspray. Note, hair weaves may interfere with the test and will have to be removed.
  • Refrain from drinking caffeinated beverages. 
  • Continue to take regular prescribed medication unless otherwise indicated by your physician. 
  • No restrictions with meals/food intake.
  • A parent or guardian must accompany minors (under age 18). 
  • A routine EEG takes approximately 90 minutes with set up, recording time, and disconnect; for adults the test takes approximately 90 minutes.

If a child/infant is scheduled for an EEG, please follow the same preparations as routine EEG plus:

  • Bring a favorite video, toy, stuffed animal, bottle, pacifier and/or blanket to help calm child. 
  • Please coordinate your appointment with child’s nap time if possible.
  • If your child is ill or has a temperature, call as soon as possible to reschedule the appointment. 
  • On the way to the EEG appointment, please keep the child awake and do not allow the child to nap. We prefer the child to sleep during the EEG testing. 
  • The test takes approximately two hours.

Sleep Deprived EEG Test

For a prescribed sleep deprived EEG, follow the same preparations as a routine EEG plus:

  • For adults: follow physicians order 
  • For children: have the child stay awake two hours later than normal bedtime and wake the child up two hours before usual wake up time. 
  • Test takes 90 minutes to two hours. 

Outpatient 2-6 Hour Video EEG

This test is a long-term EEG recording. Follow the same preparations as a routine EEG plus:

  • Bring a companion, lunch and amusements (games, reading materials, videos, etc.) 
  • Parents must stay with children throughout the test.
  • Test can take up to eight hours.

Outpatient Anesthesia EEG

Beaumont Site Specific: Options for EEG Outpatient Testing

Hospital LocationAge Group TestedStandard EEGAmbulatory EEGLong Term Monitoring (2-6 Hours)
Farmington Hills16+YesYesNo
Dearborn9+YesNoNo
Trenton14+YesNoNo
Wayne18+YesNoNo
TroyAllYesYesYes
Grosse PointeAllYesYesNo
Taylor18+YesNoNo
Royal OakAllYesYesYes