Article detailing a personal mystical experience that led the author to the belief that a little known structure in the center of the spinal cord, Reissner's fiber, is identical with the anatomical entity described by kundalini yoga. The author's struggles to understand the meaning of that experience have led him to believe that an understanding of the deeper realities underlying quantum phenomena can be integrated with an understanding of the mysterious realities of near-death and other mystical experiences, and that Reissner's fiber can serve as an empirical basis for a scientific investigation of these phenomena.