The Astral Sleep - by Jeroen van Valkenburg
The Astral Sleep - by Jeroen van Valkenburg (Photo credit: Wikipedia)

I remember hearing about a study were researchers were trying to find out what people can see during these outer body experiences.

Since the most common way people experience these outer body/astral projection things is when recovering from anesthetics, these researcher guys placed letters and objects around the room, placing objects on top of shelves and cabinets etc in a way that you could easily see these objects from above but you would have no idea anything was there when your being pushed in and out of the OR.

After 3 years of this study, and many people reporting having OBEs. Not a single person was able to correctly identify any of these objects.