A new edition of the classic scientific study of psi abilities• Details the author's scientific experiments with psychics on telepathic powers and psychic phenomena• Explores how shamanism, yoga, and Indigenous spiritual traditions provide the means to consciously cultivate psychic abilities• Analyzes the biological, physiological, and psychological conditions and stresses that lead to the development and control of telepathic and paranormal experiencesNeurologist Andrija Puharich pioneered research in psi phenomena in the 1950s and '60s. This classic edition of that research provides profound examples of telepathy, clairvoyance, and mind powers that he recorded in labs and clinical settings. Puharich also draws on ancient spiritual practices to show how one might activate these abilities.Connecting psychic phenomena to human physiology, Puharich recounts experiments he conducted with psychics in which observable activation of the parasympathetic nervous system resulted in measurable improvements in telepathic reception. He details his experiments on transmissive telepathy and how ESP and telepathy manifest in groups, and he hypothesizes that the ability to transmit thoughts and information is connected to adrenalin and related compounds.Puharich examines what he terms a "mobile center of consciousness"-how the mind is separate from the body-and how this center of consciousness can access psychic powers and nonlocal knowledge. Beyond the lab, Puharich explored how shamanism, yoga, and Indigenous spiritual traditions provide the biological and physical means to consciously cultivate psychic phenomena and ecstatic states that enable extraordinary abilities.Bringing these psi phenomena ideas into contemporary context is a new introduction by Mitch Horowitz, award-winning author of numerous books and host of the podcast Extraordinary Evidence: ESP Is Real.