Discussions on JWN have led me to start reading about the substantive work of Psychiatrists Carl Jung, John Weir Perry, Loren Mosher, Stanislav Grof and others in "Transpersonal Psychology".
Stanislav explains in this 1-hour long but very revealing video that he had no exposure to religion but became aware of dimensions beyond space-time through controlled Psychiatric research experiments with psychedelic drugs (LSD). This got him started on further research (much without drugs) in "Transpersonal Psychology" for around 45 years.
His terminology and explanations of the "hylotropic" versus "holotropic" states of consciousness maps powerfully to the "spiritual" versus "physical" in scripture and life (for me at least):
http://www.youtube.com/watch?v=2rXrhfoWJ0U
How would you respond to his opening question enquiring if you have ever experienced non-ordinary or transcendent consciousness?