A brain scan (magnetic resonance tomography) showing the regions of the brain that are active during lucid dreaming. These are the same areas that are active during self-reflective consciousness (the right dorso-lateral prefrontal cortex, the fronto-polar regions and the precuneus).
There is no separateness, only wholeness, all is joined, all is seamless
Now in his eighties this pioneering psychiatrist makes the point that there are non-ordinary states of consciousness that are a part of the human heritage, for example that of this traditional shaman pictured above. Rather than regarding them as pathological, perhaps some of these states are potentially protective or transformatory. They offer a potential way out of the spiritual crisis mankind is currently trapped in. Perhaps they provide a springboard for evolutionary change.