psychograph

1. (parapsychology) A photographic image having a supposed supernatural or spiritual origin.Examples: "In this article he deals with the still more remarkable impressions, known as "psychographs," which they have obtained on photographic plates without exposing them at all, and which Mr. Lethem claims could only be produced by "spirit" agency."; "A remarkably clear psychograph — a thought-picture — was taken, or impressed, upon a plate in Hope's home without the plate being exposed to light."; "Such a psychograph - and I believe the normal psychic photograph is such - is independent of the laws of light, so that one can imagine how utterly at sea a photographic critic would be who judged its authenticity by shadows or any such tests."

2. (parapsychology) Any of various devices used for automatic writing.Examples: "A psychograph or a planchette is an apparatus used in spiritistic circles as an instrument for receiving written messages from the spirits of the dead."; "ln a very well-known utterance, the novelist said of Effi Briest (with that curious pellucidity which has no grain of vanity in it): "Perhaps I have been so successful with it because l wrote the whole novel in a dream-like state, almost as if with a psychograph" - a psychograph being the pen-like implement used in spiritualistic ghost-writing."; "Yet more surprising are the results if recourse be had to the table, for rapping, or to the psychograph, requiring, it is true, longer practice than the divinging rod."