For a few years now I’ve occasionally experinced the joy (read: cold sweat inducing terror) of partial sleep paralysis with merry little hallucinations. One night I spent several minutes staring in horror at a demonic, childlike figure with gaping black eyeholes who stared malevolently back at me from the corner by my bedroom door. On other occasions I’ve felt myself float down the hallway, or I’ve gotten up to check on the kids/take a shower/go to the bathroom only to realize later that I never actually moved. These episodes last for several minutes, during which I fight to move, scream, kick my husband, anything to make it go away.
My question is, why does this only occur when I fall asleep on my back, and only in my bed? I can sleep on my back on the couch with no problem, but God help me if I’m in my bed. This site mentions in passing that “attacks” (referring to stories of incubi or vampires) usually occur to people who sleep on their backs, but it doesn’t explain why. Several other (rather more reputable) sites I checked talk about how sleep paralysis/hallucinations can be a symptom of narcolepsy but is more commonly ascribed to sleep deprivation; they don’t mention anything about sleep positions. Can anyone help me out here? I miss sleeping on my back.