Quite some time ago, I read a short story by Kurt Vonnegut that described an effort to “equalize” everyone. The protagonist had a different, exceptionally loud, nose played in his headphones at random intervals. It had the effect of interrupting his thought process completely, to lower his effective IQ.

I’ve always thought it was a decent representation of how ADHD works.

Hyperfocus is harder to simulate, since it requires one to focus on exactly one thing for hours on end. To the point where you don’t even think about things like “do I need a drink? Do I need to pee?”

My wife is fairly nurotypical, and it blows me away sometimes how she can decide she wants to work on something, and then works on that something. For hours on end, while being able to interrupt herself with things like pee breaks and food, while being able to go back to the project after.