 Mystical experiences occur within all world religions and probably all primal religions. In some traditions, the experiences are allegedly of a supersensory reality, such as God or Brahman. Many Buddhist traditions, however, make no claim for an experience of a supersensory reality but instead cultivate an experience of “unconstructed awareness” involving an awareness of the world on a completely or partially non-conceptual level (see Griffiths 1993). The non-conceptual experience is thought to grant knowledge of the true nature of phenomenal reality, such as the impermanent nature of all things. Prajnaparamita and Madhyamaka Buddhists refer to this as the experience of the “thusness” (tathata) or “thatness” (tattva) of reality that is accessible only in the absence of ordinary sense-perceptual cognition that is structured by cultural conceptions.