There are shadows on the wall. The `room' is so large, five-dimensional spacetime and my four-dimensional world is just the boundary of this larger space. If I try to move away from the wall, I am moving into an extra dimension of space - a fifth dimension.

I walked around the room and saw myself lying on the floor. On the floor, I saw myself walking around the room. I then walked into another room, and from the floor I saw what I should have seen had I walked into another room, yet I'm still lying on the floor in an entirely different room. I have an irregular heart-beat and I live in a world of shadows.

your story sounds like it could be a gret horror fable from anywhere in europe.