How to keep an infant awake when doctor orders sleep deprivation for EEG?

My 7 month old daughter had two seizures in one day, and it was the first time she had a seizure. The doctor has ordered an EEG, and while it may be a couple of weeks before we get all of the information, he said that she will probably need to be sleep deprived for 24 hours before they begin monitoring her brain waves.

Has anyone ever dealt with this before? I know that a couple of times when my daughter has been really sleepy, she’s fallen asleep even when being held upright. The thought of keeping my baby from sleeping has been haunting me, and I know that even if we hold her in a standing position, she may fall asleep.

What would you do to keep your infant up for 24 hours? Does anyone have any suggestions to make this easier for us?

(Keep in mind that it is my pediatrician that told me I may need to sleep deprive her. We are still waiting to hear from the pediatric neurologist. Hopefully the pediatrician was mistaken, but just in case, I’d like to have someone’s input on what to do if I have to keep her awake for 24 hours.)