Shepard Tone - Developed by psychologist Roger Shepard at Bell Labs, this illusion is made of a set of tones that appear to perpetually rise or tumble. The illusion is developed by super-positioning pure tones (sine waves) an octave apart. Other illusions are determined by common assumptions the brain https://brooksuchlp.izrablog.com/36223385/illusion-of-kundun-mu-online-fundamentals-explained