Every so often I hear my doorbell ring, just to find nobody there. When I cared for my mother, one day I was watching her sleep through a camera with night vision. All of the sudden, I see globes of light run back and forth on my screen, maybe a half a dozen. The whole room filled up with them. I saw only one in the hallway. At the time, I just found this interesting. When very young, I saw the image of my late grandfather in the kitchen one night, like a ghost.

It seems that when I am under allot of stress, this can happen to me. Any thoughts?