The Biotheology reference article from the English Wikipedia on 24-Apr-2004
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Biotheology

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Biotheology, also known as neurotheology, is the scientific study of the evolutionary, neurological and psychological structures for the cognitive experiences of spiritual awe, oneness with the universe, ecstatic trance, sudden enlightenment and other altered states of consciousness that are the basis for many religious beliefs and behaviors.

External links and references

Matthew Alper. The "God" Part of the Brain: A Scientific Interpretation of Human Spirituality and God

James H. Austin. Zen and the Brain: Toward an Understanding of Meditation and Consciousness

Andrew Newberg, Eugene G. D'Aquili and Vince Rause. Why God Won't Go Away: Brain Science and the Biology of Belief