I first learnt about aphantasia maybe a couple of years ago in some corners of the net.. I can’t really imagine how it’s possible that you don’t see stuff with your mind.. To me it seems just as strange as being unable to speak while having a perfectly fine voice..
I probably have the opposite problem, when I read a book that I like I’m completely lost in that world and I’m kind of unaware of what is happening in the real world.
I remember when I had an EEG ages ago and the technician asked me to relax, and I did exactly that. He must have noticed something strange since he asked me if I was sleeping..