Test Your Brain is National Geographic's groundbreaking three-part series that provides a fascinating window into the inner working of the brain as never before. Through interactive experiments and tricks reveals how our brains create the illusion of a seamless reality. As these revealing experiments provide a unique view into our brains, the world's leading experts explain how and why these tests work. This series explores cutting-edge science to examine real people with extraordinary brains, revealing new discoveries about attention, sensory perception and memory. Featuring - Pay Attention, Perception, Memory.