NOVA scienceNOW: How Does the Brain Work?

How the brain works, featuring illusionists Penn and Teller and sleight-of-hand artist Apollo Robbins in a segment on the processing of visual information; humorist Mo Rocca learning firsthand about mind control; and neuroscientist David Eagleman demonstrating how the brain constructs reality. Also: how programming computers to mimic the human thought process is revealing new insights into the brain.