Post-Cinematic Paranoia
The paranoia you receive after watching a horror movie.

Mostly affects your reality and gives you the thought of being in the position of the main character in the movie, or being a target of the being which makes the movie scary.
Paranormal Activity is what inspired this word, for it is the perfect example.
After watching the movie, viewers are more alert to the slightest noises and fear that they are the target for a haunting, hence, Post-Cinematic Paranoia.