Electroencephalogram E.E.G.

What is an EEG?

An EEG is a test which detects electrical impulses in the brain and records them on the computer. This examination gives important information about the condition of the brain and can help diagnose illness or injury as well as monitor medical treatment.

What to Expect

Electrodes are applied to the head with an adhesive gel. Wires from the electrodes are connected to the EEG machine. The electrical impulses from the brain are transmitted through the wires into the EEG machine.

Your neurologist will interpret the test results and a report will be completed within 5-7 days. The total time for this test is approximately 1 hour.

Preparation for Test

Wash your hair thoroughly and do not use conditioners, sprays, etc. Eat a good meal before your appointment. Avoid any drink with caffeine for 4 hours prior to test. Discontinue all sleep medications or tranquilizers 24 hours prior to test. If you take medications, continue to do so unless otherwise advised by the physician.

If you are having a sleep deprived EEG, please limit your sleep to 4 hours total the night before the procedure. You may want to be accompanied by someone to drive you home.