If you are interested in this topic, I suggest watching the conversation between Edward Gibson and Lex Fridman. In the middle of the conversation [1] Edward talks about how there is a "human language comprehension network" within human brain, which gets activated only when we read or speak in any human languages, but nothing else. For example for those speaking multiple languages, reading or writing in any of those languages activates the network. But reading gibberish or computer code, neither activate the network.
[1] https://www.youtube.com/watch?v=F3Jd9GI6XqE&t=4906s