Originally Posted by WILD Tutorial
During your time in this phase you may also experience hypnagogic hallucinations. These can be of any senses, but most often are associated with sights and sounds. There are several common hallucinations, however they can take many forms.
The memory footprint hypnagogic hallucination is the one that tells you that you are getting close to a lucid dream. It happens when you are hovering between the subconscious and conscious minds, dipping into the subconscious to pick up a part of a dream image, but then coming back out. Because you are in between consciousnesses when seeing memory footprints, it is important not to disrupt yourself because you are very close to slipping into the dream state.