I used to also get this as a child. I would experience for example my nearest wall or my mothers face being both very close and far away at the same time (always after going to bed). This would make it seem like the object in question was shifting from near to far and back at great speed. Terrifying as a child.

I also recall, around the same time, having strange dreams where things "felt" very large or massive, in wheight and/or dimension. This feeling would often persist if I woke up from such a dream.

I remember once one of these dreams/night terrors was so intense, I woke up to find myself screaming in another room of the house, I had apparently stumbled over there, completely disorentated, half asleep.

Very very rarely, I get the same feeling during dreams. But its not as well defined as I remember it from my childhood. Kind of like its at the edge of my conciousness when I wake up.