Perispirit

In Spiritism, "Perispirit" is the subtle body that is used by the spirit to connect with the perceptions created by the brain. The term is found among the extensive terminology originally devised by Allan Kardec in his books about Spiritism. Its first use was in a commentary (by Kardec) to the answer given by the spirits to the 93rd question of the Spirits Book:

This was a breakthrough concept, as the spirit had not been thought of as usually from its form (the ghost one saw was considered "the ghost itself", not the appearance of a ghost). Kardec, then, was compelled to develop further the notion, especially by given "scientific" fundamentation to his theory. He studied the properties of what was then called "fluids" (electricity, magnetism, heat) and broadened the research towards those he termed "psychic" or "spiritual fluids". Both terms, especially the previous have stuck and are still used (or abused) up to now.

In Kardec's later conception, found in The Book on Mediums, he described the perispirit (then assumed as "technical term") in terms of a "fluidic body" with the following properties:

The perispirit plays a key role in the phenomenon of mediumship, which actually involves the interaction of the perispirit of the medium and that of a disembodied spirit. When invited to our plane of existence by a medium, "spirits who inhabit worlds of higher degree than ours ... are obliged to clothe themselves with" a garment composed of perispirit. "The most elevated spirits, when they come to visit us, assume a terrestrial perispirit, which they retain during their stay among us". "According to Kardec, it is through the perispirit that disincarnate spirits ... can move objects." (Thus, the perispirit is responsible for poltergeist manifestations.)

Due to syncretism, some variations of spiritism accept the perispirit as an actual "body" possessing power centres, defined more or less in the same way that Theosophy and Yoga define the Chakras, thus making the concept of perispirit similar to that of an astral body, a concept that was unknown to Kardec.

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