Mail Online reports, “A near-death experience happens when quantum substances which form the soul leave the nervous system and enter the universe at large, according to a remarkable theory proposed by two eminent scientists. It is based on a quantum theory of consciousness he [Dr. Stuart Hameroff] and British physicist Sir Roger Penrose have developed which holds that the essence of our soul is contained inside structures called microtubules (picture) within brain cells. Dr Stuart Hameroff, Professor Emeritus at the Departments of Anesthesiology and Psychology and the Director of the Centre of Consciousness Studies at the University of Arizona, has advanced the quasi-religious theory.” You can get the detailed scoop at Quantum Consciousness.