Some of them, anyway.
I remember an experiment I did at the age of 11. My test subjects were Cub Scouts. My hypothesis (that nobody would see me sneak a fishbowl under a shawl) proved false and the Scouts pelted me with hard candy. If I could have avoided those welts by visiting an MRI lab, I surely would have.
But magic’s not easy to pick apart with machines, because it’s not really about the mechanics of your senses. Magic’s about understanding—and then manipulating—how viewers digest the sensory information.