Scientists at the University of Utah have discovered that the eyes influence what the brain hears.
The scientists did an experiment with epilepsy patients where they actually measured brain activity when the subject was presented with an image and a sound at the same time. They found when the image and sound were slightly different, the visual areas of the brain were more active, and the subject reported “hearing” what was seen rather than the actual sound that was played.
This research shows that if somebody is not hearing right, it might not be just the ears that are to blame. For a child with a functional vision issue that causes mix up letters, they can understandably be confused when verbal instruction does not appear to match the words as they are perceiving them.