Hypnagogic hallucinations occur when you are in that place where you are just about to fall asleep but are not quite there yet, or as you try to wake from your slumber. These hallucinations can be auditory or visual and are distinct from dreaming. Research shows
that they are a little more likely to occur if a person is especially tired or if he/she has a preexisting mental condition, but it is very common for perfectly healthy people to experience hypnagogic hallucinations.
