Our brains are apparently really good at divvying up heavy mental loads. In the decades since scientists started taking snapshots of our noggins in action, they’ve spotted dozens of distinct brain regions in charge of specific tasks, such as reading and speech.
Source: http://arstechnica.com/science/2016/08/brain-wiring-needed-for-reading-isnt-learned-but-in-place-prior-to-reading/