Can you wear out certain parts of your brain?

[magnetaress]

I find it v hard to type concisely and correctly these days and when I speed type it looks like some kind of aphasia sometimes (non verbal but typing based instead).

Sometimes I'm paranoid and thinking that the application/form/web/msg/keyboard software is changing the letters or words in my text automatically without me knowing, butt (AND) at random not because it never seems to autocorrect some butt some fully form words are also wrongs??! or did I just type ten like in.

It's irritating to say none the less and It also happens more when I am pushing the boundaries of fatigue. or in a looot of pain