What the test records
EEG uses electrodes placed on your scalp to record electrical activity in the brain. Extended recordings provide a longer observation period; video EEG records video alongside the EEG so the clinician can compare events with brain activity.
The clinician selects the type of test based on the question being investigated. An EEG is one part of an evaluation, and a normal recording does not by itself rule out epilepsy.
Before your appointment
- Confirm the test location, scheduled length, and preparation instructions.
- Ask about hair products, sleep, meals, and medicines before the test. Follow the instructions from your clinical team.
- Do not stop medicines or change your sleep schedule on your own.
- Bring the information and records requested by the office.
Understanding your results
Your clinician considers the recording with your symptoms, medical history, examination, and other tests. Ask when and how results will be discussed.
For a medical emergency, call 911. Testing appointments and online messages are not emergency services.