The Theosophists teach that just when the soul leaves the body, there occurs a process of psychic photography in which the past life, in all of its details, is indelibly imprinted on the inner substance of the soul, thus preserving a record independent of the brain, the latter being left behind in the physical body. Then the Astral Body, or Etheric Double, detaches itself from the body, from which the Vital Force, or Prana-Jiva also departs at the same time, the Astral Body enfolding also the four other principles, and together the Five Surviving Principles pass on to the plane of Kama Loka, or the Astral Plane of Desire. Kama Loka is that part of the Astral Plane nearest to the material plane, and is very closely connected with the latter. If the soul is filled with hot and earnest desire for earth life, it may proceed no further, but may hasten back to material embodiment, as we said a moment ago. But if the soul has higher aspirations, and has developed the higher part of itself, it presses on further, in which case the Astral Body, and the Animal Soul which is the seat of the passions and grosser desires, disintegrate, and thus release the Triad, or three-fold higher nature of the soul, namely the higher human soul, the spiritual soul, and the spirit--or as some term them, the intellect, the spiritual mind, and the spirit. The Triad then passes on to what is known as the plane of Devachan, where it rests divested of the lower parts of its nature, and in a state of bliss and in a condition in which it may make great progress by reason of meditation, reflection, etc. Kama Loka has been compared to the Purgatory of the Catholics, which it resembles in more ways than one, according to the Theosophists. Devachan is sometimes called the Heaven World by Theosophists, the word meaning "the state or plane of the gods."