Ambulatory EEG (AEEG) Study

What is an Ambulatory EEG (AEEG) study and why do I need it?

AEEG monitoring is a relatively recent technology that allows prolonged EEG recordings in the comfort of your home. Its ability to record continuously for up to 72 hours increases the likelihood of recording those events that occur only intermittently. As opposed to a routine EEG, which monitors only a short snippet of time, an AEEG provides a more complete picture, and aids your physician in diagnosis.

What should I expect at my appointment and afterward?

An EEG technologist applies up to 24 electrodes to your scalp and two ECG leads on your chest. A special heat activated tape will hold the electrodes in place securely for the test’s duration. Your technologist will explain this procedure in detail and answer any questions you may have on the day of your test. Please allow two hours to complete the AEEG set-up and training.

Once applied, the electrodes will be connected to a lightweight, battery-operated recorder worn around your waist (or in a backpack for children) that is approximately the size of a small cassette player. Additionally, if your physician has ordered it, you will have a portable video unit to which you will connect whenever you are immobile (i.e., watching TV, reading a book, in bed, etc.).

What am I allowed to do while I am on the machine?

Most normal daily activities are fine, although you may opt to spend most of the testing session at home. Your doctor may have specific orders in this regard. Avoid any strenuous activities such as jogging. It is imperative to keep the instrumentation dry so please, do not take showers or baths during the AEEG recording period.

What should I do to prepare for the test?

Wash and dry your hair thoroughly before your AEEG appointment. Do not apply gel, hairspray, or oil-based products to your hair after washing it.  Please avoid elaborate hairstyles. Do not braid or tease your hair and remove any hairpieces or hair extensions.

Wear comfortable casual clothing with a button-down top on the day of your testing. Avoid clothing that you must pull over your head. You may want to bring a loose hat or scarf to cover the head wrap that we must apply to keep the electrodes fastened securely for the duration of your testing.

You may not chew gum during your AEEG.

If possible, bring one person who will be staying with you during your testing so they too may learn to operate the AEEG device. Accompanying persons may wait for you in our waiting room.

How does the system operate?

You will be given one or two recording devices depending upon what your physician has ordered. The first device that everyone will wear is a small recorder that is worn around your waist. Once activated by our technologist, it will record continuously until you return to our Center to have it taken off. This recorder is equipped with an Event Button that you will push each time you experience your typical event. 

The second system is a video recorder. It records only when it is connected to the recorder you are wearing. If you have both units, please remember to connect them as soon as you get home.  

Why would my doctor include the video in my study?

Video, when recorded along with EEG, provides additive information. Please position the video so your face and upper body are visible whenever possible. To improve the quality of the video recording, avoid placing bright lighting directly beside or behind you.

What should I do if I have problems?

You have access 24 hours a day to our toll-free Help Line.