Sleep paralysis occurs when the hypnotic part of your brain wakes up during sleep but the paralytic aspect of sleep is still active. In other words, that inner voice in your head wakes up and you can hear what's going on around you to a degree but you can't move your body. You feel heavy and paralyzed; very scary feeling but completely harmless, since most people experienced it at one time or another. The reason I'm asking this is because anxiety sufferers- a lot of people with dp have anxiety as well-seem to have this phenomena to a much greater extent. And what's ineteresting is that it seems like the opposite of depersonalization. You can't move you body but your conscience is definitely aware and screaming for help. With depersonalization you oprate as if your awareness is gone, completely robotic and not there, but your limbs/body/physical is working just fine.