When we teach about language in the brain, most of us teach about the modularity of the brain–the (sometimes contested) fact that different regions of the brain seem to specialize in certain activities. However, the brain is very plastic, and we know that traumatic brain injuries can result in radical remappings of the expected ordering in the brian.
Here’s a lay-person’s write-up to research comparing the brain activities of blind people to those of sighted people.
The intro reads “the portion of the brain responsible for visual reading doesn’t require vision at all.” It’s exciting, but it’s probably not entirely surprising to those who study the brain. Cause and correlation are not the same thing. What we once thought of as a visual area, may in fact have multiple specializations. We won’t know until we do more research.