it could be a reflection of what we see in our daily lives.
we often dream of something we have experienced.

I would like to know how a blind person dreams and percieves objects and so forth.

and I know you also mean that the dream world is real in a way, but who knows.

Some dreams feel similar to imagination, but I know that my imagination is just ideas and thoughts put into picture, maybe the dreams are just that aswell, but put into a sort of 3D experience shape.

It is tempting to imagine the paralysis stage/realm as something real, and to some it might feel more real than the real world.

we also see shadow figures when we are afraid and the mood is right, that doesn't make it more or less real though.
but who knows.

what do you think it is?
what do you mean by the same imagery, what is it that makes it the exact same.