Essentially, the pair shoot a laser beam into the brain of a living mouse to activate and manipulate its memory. In this unexpectedly amusing talk they share not only how, but -- more importantly -- why they do this. (Filmed at TEDxBoston.)

 

When Steve Ramirez published his latest study in Science, it caused a media frenzy. Why? Because the paper was on implanting false memories in the brains of mice.