I hear noises often and during the night time is when they scare me the most. My Pdoc had to give me an anti-psychotic for them this last time I went and saw her. I have two beagles that sleep in our room that way I know which noises are real and which ones are in my head. Even though I know my dogs will bark like mad when the noise is a real noise I still freak out if I'm not expecting it.