Good erotic literature does not only describe images, but also desires, emotions and sensations, all of which I think have different channels of imagination/recall.
I didn't mean it describes images, I meant it elicits them. If you cannot imagine what's happening, you cannot get aroused. Words are just words, they must conjure an image.
Aphantasiacs often cannot imagine sensations either (at least, my friend doesn't. He cannot imagine the smell of coffee either).
