I've had similar experiences, but I'm not sure if it is due to photoreading. I can sometimes sense that something has proximity to me, but no one is there. As well, I occasionally see things in the corner of my eyes dart past hallways or corners etc. I think a lot of people see these things, and whether they are subconcious "brain farts," mind tricks or things in another dimension I doubt we'll know in our lifetime. But it is an interesting topic. Think about the good psychics, usually they are able to connect to energy and information on a different dimension.
"It is as it is" - my quote for the day
