Psychologists and neuro scientists don't even know what the psyche is (which is a metaphysical philosophical question). They all have different definitions that are irreconcilable with each other, and these guys claim that the elephant is inside the subject's head and not in reality. This is really stupid. The very nature of dreams, and anyone who has dreamed and paid attention trying to retain the information, knows that they are ultra-ephemeral. That it is not possible to retain any minute details of the dream. That the images are disconnected, blurred and what impregnates the mind are specific situations and feelings that quickly disappear upon waking, and even during the process in which the individual changes from REM state to deeper states. Honestly, these guys have a great chance of being charlatans.