Ever wonder what medical conditions would give a zombie its zombie-like qualities? Well, we’ve got the answers thanks to TED! Tim Verstynen & Brad Voytek have produced this new video that gives the two of them the chance to debate and illustrate the causes of zombism.

Zombies eat brains. They are also, like all of us, driven by brain functions. What is happening in their brains to make them act as they do? In this intriguing dialogue, Tim Verstynen & Brad Voytek apply the various human medical possibilities that make zombies…zombies.

Lesson by Tim Verstynen & Brad Voytek, animation by TED-Ed.