Dr. Alex Huk, a neurobiologist at The University of Texas at Austin, talks about one way that the brain perceives 3-D motion. 3-D motion perception is critical to everyday life and survival. He and his fellow scientists Bas Rokers and Larry Cormack also discovered that the brain processes 3-D motion in an area called MT+, long thought to only be responsible for processing 2-D motion. Read more: http://www.utexas.edu/news/2009/07/21/brain_3d_motion/