Believing Your Ears: Examining Auditory Illusions is based on an extensive filmed conversation between Howard Burton and Diana Deutsch, Professor of Psychology at UC San Diego and one of the world’s leading experts on the psychology of music. This conversation provides behind the scenes insights into her discovery of a large number of auditory illusions, including the so-called Octave Illusion, which concretely illustrate how what we think we’re hearing is often quite different from the actual sounds that are hitting our eardrums.