Your Brain on Movies, Pt. 1

Ever find yourself crying at a cheesy movie that you don't even like very much? Or catch yourself ducking and flinching during an action flick, even though you're perfectly safe in a movie theater, munching popcorn? Jeffrey Zacks, professor of psychological and brain sciences at Washington University in St. Louis, shares some of the reasons why. Zacks is author of the book Flicker: Your Brain on Movies.