Electroencephalogram (EEG)

• EEG = electroencephalogram
• An EEG is a record of brain activity.

• To record brain activity, electrodes are put on the scalp.

• The "brain waves" are shown on a computer.

The Test

• A complete test includes both waking and sleeping.
• The EEG is also recorded while your child is resting with eyes closed and open, doing a deep breathing exercise (hyperventilating), and watching a flashing light (photic stimulation).

• All children are digitally videotaped during their EEG so that the doctor can connect questionable episodes or behaviour with brain activity.  If you have any concerns about this, please speak to your technologist.

• To learn more about the EEG, you can look at the EEG Photobook (PDF) or print an EEG pamphlet (PDF).

Preparing for an EEG

• Your child MUST be sleep deprived the night before the EEG.
• A successful and complete EEG records both waking and sleep.

• Your child must:

  • Come awake to the test.
  • Fall asleep during the test.

Website updated May 2012.