Sirley Marques Bonham is a physicist by education but has a passion for the study of consciousness - making her a neuroscientist at heart. She kindly donated the following scientific article on Consciousness and Hypnagogia, containing a rich source of information on various sleep phenomena.
The article is fairly long so I have broken it down into sections. It is well worth dipping in to the parts that interest you the most - from lucid dreaming, to OBEs, to sleep paralysis - Sirley has collected valuable data and insights on all these altered states in relation to human consciousness.
Consciousness and Hypnagogia: Dream Imageries, Reveries and the Development of a Relationship with the Unconscious Mind