More to the point has any athiest here ever had a demon experience?
Dont know about demon experience. But I saw this doco on 'sleep' awhile back. One of the weird things thats seems to be consistently reported is: waking up in the middle of the night paralysed with the sense that someone is in the room or sitting on your chest. This is one of phenomenon thats been reported for centuries in varying forms I believe. I've experienced it. I woke up one night but couldn't move and I heard the bedroom door slam and sensed there was someone in the room. It was scary. Then the sensation just went away.
I've also experienced vivid waking hallucinations too. I've seen things you could probably call a demon!