Can you give me an example from the pre-internet era? When you compare somebody living in an oral culture with somebody living in a written culture, what facilities would have strengthened and what would have weakened? What would have changed?
One thing that changed pretty dramatically is that the visual cortex, the part of our brain that processes our vision, became dedicated to deciphering text. [...]
As we practice that, more and more neurons get dedicated to reading. Eventually, you no longer have to decipher a particular letter or even a particular word because our brains represent those letters and words — it’s automatic. So we got all the benefits that come with being good readers, whether it’s the value of losing yourself in a novel or the value of gaining complex information from some sophisticated nonfiction book.
But we also lost something. One thing we lost is a lot of our visual acuity in reading nature and reading the world. If you look at older cultures that aren’t text-based, you see incredible abilities to, for instance, navigate by all sorts of natural signs. This acuity in reading the world, which also requires a lot of the visual cortex, we lost some of that simply because we had to reprogram our brain to become good readers.
(From “How technology literally changes our brains”, Vox.com, July 1st 2020)