Can anyone tell me how to perform the scans (biomass, MRI, Heat) for the puzzle sequences? I can't seem to figure out which keys to press to make them happen. I've tried button-mashing to no avail and Zak's finger won't hover over the options, only the controls of whatever object he is trying to disarm/open.

Thanks for any help y'all can provide.

F1, F2 and F3 as far as I could tell.