Why You Hear a Sound That Isn't ThereYour brain creates a simplified reality from complex noise.

From the show

Brain Perception Illusions

This auditory illusion reveals how your brain separates what a sound is from where it is. By playing two different tones to each ear, you can experience how your mind constructs a single, coherent sound that doesn't actually exist. This simple experiment, which you can try with any pair of stereo headphones, exposes the mental shortcuts your brain takes to process the world around you.