What is an EEG?

EEG stands for ElectroEncephaloGraphy.  Using 24 small leads to measure your brain activity, we'll be able to look for any abnormalities, and record a tracing for our Neurologists' review.  During an EEG, we ask the patient to remain still and relaxed, keeping their eyes closed throughout the recording.

Do EEGs hurt?

​The actual EEG recording will not hurt at all.  The leads record electro-activity produced by your own brain.  During the initial hookup, the tech will get the recording sites ready by rubbing a prep solution over each area for the leads.  This prepping process is slightly uncomfortable to some of our patients.  Others comment that it feels similar to a beauty treatment.

How long does it take to perform an EEG?

For a standard EEG, the average total time is 60-90 minutes.  That includes set-up and removal of leads after the test is complete.

What happens after the EEG is completed?

Immediately following the EEG, the tech will remove the leads.  The tech will wash off the recording sites, but be aware that there is usually still going to be at least SOME residue left from the recording gel.  Its a good idea to plan on washing your hair after the EEG.

What if I don't have a seizure during the EEG?

Most people will not have an actual seizure event during an EEG.  EEGs record brain activity, which will show any 'speed bumps' in the neural pathway.  This shows doctors where to look for problem areas.

What is an Ambulatory EEG?

An Ambulatory EEG uses the same leads, and records the same activity as a routine EEG.  The differences are how the leads are placed and the length of recording time.  Ambulatory EEGs are generally recorded over 72 hours.

What is Intraoperative Monitoring?
Intraoperative neuromonitoring (IONM) is the use of electrophysiological methods such as electroencephalography (EEG), electromyography (EMG), and evoked potentials to monitor the functional integrity of certain neural structures (e.g., nerves, spinal cord and parts of the brain) during surgery. The purpose of IONM is to reduce the risk to the patient of iatrogenic damage to the nervous system, and/or to provide functional guidance to the surgeon and anesthesiologist.

Frequently Asked Questions