"fMRIs"? Wuts that?
And I know what you mean about all that blanking out or going elsewhere while mid working/talking thing. I do that a lot. but I've always- well not always, but for quite a few years now, I've assumed it ADHD, because the right dose of ADHD med stops that problem (and then the wrong dose of ADHD med causes that problem to be even more severe). So i know in my particular case, that Stimulants (As the ADHD meds that i've been on) can either better, or worsen it. along with many other issues. So maybe something in these stimulants can clue someone into what it does and why it's happening and what the brain is either lacking or having too much of that causes this to happen.