Hi Metroland,
I do think that it might be very individual depending on your brain make up. With cis people it's very clear what the brain make up is, with FtM and MtF there have been a few studies at least (although mostly not very conclusive from what I read), but for androgynes there's nothing really.
I think I've probably always had more testosterone than the average person, but that might be due to many factors, such as the amount of sport I do and my diet even. I definitely believe certain areas of my brain were 'masculinized' in the womb (or something like that, the science is still a bit unclear on the causes). but why that should necessarily be linked to increase levels of androgens, I couldn't really say. it may be more to do with the life style choiced i made... but i can't deny that when i was on the hormones i made other life style choices that might naturally have changed the balance of my hormones anyway.
I'm finding it very hard to get my head around what exactly might have gone on, so all i can offer is really how it affected me, and only guess at the causes...
A lot of FtM and MtF seem to be happier when they take the hormones that push them more towards the gender they identify with. but the cause of feeling more content might be something other than the hormones themselves, but more the secondary effects they have on the body...
... but still... my guess would be that changing my hormone levels to be more out of whack with what my ~roughly half masculinized brain would like them to be led to that masculinized part to somehow be 'over-ruled' or suppressed.
until I, as in that part of my brain too, woke up and realised that that wasn't me.
:-/
trying to make sense of it makes my head hurt and like i said, any explanation i just tried to offer is probably complete and utter bull->-bleeped-<-.
i will keep reading journal papers, lol, but they don't seem to help clear up my confusion because obviously i'm not an expert so i can't understand 90% of what they write, lmao.