@Mame,
Disagreed with several characterizations there btw -- since its Wikipedia I really should go ahead and say so/ fix things but my to-do list is already too damn long. Just noting in the "grain of salt" category. It does seem to have plenty of good info mixed in with the not-so-good. (If you're curious about whether I consider a given piece of info good or not good, lemme know...)
When people are born without functioning vision their visual cortex ironically is never associated with the sense of sight. Instead, their brain deticates this area to understanding their remaining senses. Most blind people understand the world spacially but none can truly visualize. Along the same lines there are people who have functioning vision but are unable to "see" things in their "mind's eye", this condition is named Aphantasia. People with Aphantasia are unable to conjure any imaginatory vision into their mind. They can't see their parents faces if they close their eyes, can not see color, and can't visualize their own face.
