Prior to this I knew little about EEGs. Here is a quick excerpt from Wikipedia:
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain. In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity.
A standard EEG is done with the patient lying still in a clinic for 20-40 minutes. Overnight ones are also given for patients with sleep problems. They are also used to test for seizures. We have never experienced "episodes" of any sort.
We did an ambulatory EEG. Parker has the leads hooked up at the clinic on Friday afternoon. He had a backpack with the recording device that he had to carry with him for a full 24 hours. It weighed over 2 lbs. (10% of his body weight) so I was not surprised he was tuckered out!) I did a lot of research about ambulatory EEGs, but didn't find much. The video below has pictures and clips from our experience.