Through careful attention to details of the image environment, affective states, and physical sensations, the natural waking hypnagogic state can be artificially intensified, so the initially flimsy image ambience becomes increasingly dense, sometimes perceived as equally real, as while dreaming.
Bosnak argues that the waking hypnagogic state, characterized by dual consciousness, is not merely a spontaneous threshold phenomenon but a deliberately inducible and therapeutically intensifiable mode of embodied imagination.
, Embodiment: Creative Imagination in Medicine, Art and Travel, 2007thesis