The "your brain on ChatGPT" is giving the same feel as DARE's "your brain on drugs" campagign, and we now see how that went. It immediately loses any credibility for me.

It wasn't immediately clear what they actually had the subjects do. It seems like they wrote an essay, which...duh? I would bet brain activity would be similar -- if not identical -- as an LLM user if the subjects were asked to have the other cohorts to write their essay.

Just look at this comment section - one flawed headline is all it takes to get hundreds of people writing essays about how they totally understand how the brain works and knew it all along.