Electroencephalogram (EEG)

This safe and painless test records the electrical activity of the brain using special sensors, called electrodes that are attached to your head. An EEG can help diagnose, monitor, or rule out some brain problems such as epilepsy, head injury, brain dysfunction, inflammation of the brain, stroke, and dementia among others.

Time:

Approximately 90 minutes. More time will be allotted for young children.

Preparation:

Routine EEG

  • Wear comfortable clothing.
  • Shampoo and dry hair without using sprays, gels or oils. No braids or intricate hair designs as they will need to be removed prior to the test.
  • Continue taking medications as prescribed by your physician.
  • Bring a list of your medications you are taking.
  • Arrive 15 minutes prior to your appointment.
  • Children should be scheduled so EEG corresponds with their nap times and prevented from napping prior to having their study.

Ambulatory EEG (24/48/72 Hour)

  • Follow instructions for a Routine EEG, and wear a button up shirt, as the EEG equipment will be left on for 24 hours, limiting your ability to change clothing.
  • You will leave wearing electrodes and a small recorder (somewhat larger than a "smart phone"). You will be scheduled to return within the next 24-72 hours to have the electrodes removed.

Sleep-Deprived EEG

  • Sleep deprived patients will need to have no more than 4 hours of total sleep the night before (i.e. 12 a.m. (midnight) to 4 a.m. or 1 a.m. to 5 a.m.).
  • Parents of young children, please schedule appointment for nap time and bring child's favorite toys, tablet, blankets, bottles, etc., to help them feel as relaxed and comfortable as possible during the test.
  • Avoid caffeine, chocolate or any other food/drink products that may contain caffeine, as this will negatively impact your ability to complete the study.
  • Research has proven people who are sleep deprived may have their driving adversely affected; therefore, we recommend that you do not drive and have someone drive you to and from your appointment.
  • Shampoo and dry hair without using sprays, gels or oils. No braids or intricate hair designs as they will need to be removed prior to the test.
  • Continue taking medications as prescribed by your physician.
  • Bring a list of your medications you are taking.
  • Arrive 15 minutes prior to your appointment.

Your Results:

All neurodiagnostic test results will be interpreted by a neurologist, and results will be sent to your physician. Your physician is responsible for communicating your results to you and helping you understand what they mean. If you have any questions about your test results, please call your doctor.

If you have a MyMidMichigan account, we will also send your test results to your account. If you need help accessing your test results in MyMidMichigan or would like to request a paper copy, please call MidMichigan's Health Information Department at (989) 839-3319.

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