Your brain’s electrical activity fluctuates from one second to the next. A typical electroencephalogram (EEG) provides a short sampling of brain activity. That means epilepsy waves, which may occur in your brain every 3 or 4 hours, or only at certain times of day, may not be recorded on a standard EEG. Recording your seizure activity may require longer periods while you are awake and asleep. An ambulatory EEG is a portable unit you can wear at home and while you move about.
We sometimes recommend an ambulatory EEG if you continue to have seizures after using various seizure medications. The test can confirm a diagnosis of epilepsy or reveal that epilepsy waves are not causing the seizures. Our specialized epilepsy center often performs ambulatory EEG monitoring. Ambulatory EEG helps us diagnose a variety of neurological disorders, headaches and dizziness, seizure disorders, stroke and degenerative brain disease.