EEG – Electrencephalogram
What is an Electroencephalogram (EEG)?
- An Electroencephalogram or EEG is a diagnostic test which examines the “brain waves”, using electrodes placed on the scalp. These electrodes are connected to a computer, which records your brain waves.
What is the difference between a “routine” and “ambulatory” EEG?
- Routine EEG
- A “routine” EEG is performed in the office, which takes approximately 30-45 minutes to perform.
- This type of study only records your “brain waves” for about 20 minutes.
- Ambulatory EEG
- For an “ambulatory” EEG, the electrodes are connected to your scalp in the office, but we then send you home with these electrodes, along with a small hand-held computer.
- This will record your brain waves for 3 or 4 full days, while you are leading a “normal life”.
- Such EEGs are more accurate in that they are able to pick up abnormal brain waves while you are at work or while sleeping.
- At the end of the 4 days, you will return the equipment to our office, which will then be analyzed and interpreted by Dr. Athni.
- Please discuss which type of EEG is appropriate for your situation
Which type of EEG is most ideal?
- Each type of EEG is used for different purposes.
- Which EEG is best for you will depend on your individual clinical situation.
- Dr. Athni will discuss these options with you during your office visit.
How is the EEG procedure performed?
- An EEG is a painless procedure, which involves attaching numerous electrodes to your scalp. These electrodes are connected to a computer, which will record your “brain waves’ during the duration of the study.
- These brain wave recordings are reviewed and interpreted by Dr. Athni.
- A certified EEG technician will attach the electrodes and perform the study, while being overseen by Dr. Athni.
Will an EEG always diagnose a seizure?
- A normal EEG does NOT mean there is “nothing wrong with you”.
- It also does NOT absolutely exclude a seizure or any other disease.
- The results of the EEG are used in conjunction with your clinical symptoms and other diagnostic tests, to make a final diagnosis and conclusion.
How do you prepare for the EEG test?
- For the test, PLEASE do the following:
- go to bed at 1 AM, and get up at 5 AM
- wash your hair in the morning
- NO hair spray, NO gel, NO mouse, NO oil
- DO NOT style your hair: NO braids, NO ponytails
- Wear a button down shirt or blouse
- NO perfumes or body lotions (you MAY wear deodorant
- The EEG tech will remind you about your appointment and answer any questions you may during the test.
When will you get the results of the test?
- After the completion of the test, Dr. Athni will review the recorded “brain waves” and put together an analysis or “report”.
- This will be reviewed with you on your next office visit.