This bit was pertinent to our search I believe
"Learning how to perceive motion is thought to be controlled by lower-level functions of vision believed to be largely "fixed" or unchangeable after critical periods of development during the first few years of life," explained Seitz. "And the fact that hearing benefits this low-level visual learning is rather surprising. What our results demonstrate is that with the right training paradigms, you can actually achieve alterations in adult perceptual systems."