Researchers have found a connection between early recognition of sound and the visual cortex. We humans can literally “see” the object in our visual system when the sound is processed. This gives us a survival advantage over other species.
“Sounds create visual imagery, mental images, and automatic projections. So, for example, if you are in a street and you hear the sound of an approaching motorbike, you expect to see a motorbike coming around the corner. If it turned out to be a horse, you’d be very surprised.”
Some of us, like Lance Priest, have this mental ability and then some. He can not only see sounds, he can see pretty much everything going on around him. It makes him unique, and dangerous.