SOMA and the consequences of brain scans

I was a bit surprised at first how many people mentioned that playing SOMA gave them a strong feeling of existential dread. But it makes sense that the first time someone encounters that particular concept is especially effective, and I had definitely encountered it before. Then I tried to think where I'd encountered it: at first I couldn't think of a specific book or movie or TV show. However, what did come to mind was an SGA fanfic I read almost ten years ago: The Body Holographic by Leah/taste_is_sweet and springwoof. (Which, incidentally, also happens to be one of the few fics that literally made me cry. That's why I didn't reread it now, just skimmed it.)

( Spoilers for the fic and for SOMA )