Luke was in another UW study to see if researchers could get 5 year olds to lay still in an MRI tube and watch a movie for 5 minutes. Then the kid slides back into the tube, listens to sounds, and without looking pushes a button when they hear a matched set.
This was just practice, so a fake MRI machine with a boom box playing aloud droning MRI machine sound in the background. The real kids will have MRIs of their brains done at the same time. Here's what I saw. Feet.