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May 13, 1899


JAMA. 1899;XXXII(19):1068. doi:10.1001/jama.1899.02450460052026

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The origins of hallucinations of sight, resulting in visions, and those of hearing called voices, are very interesting studies. Morton Prince of Boston, in an experimental study of visions, published in the winter number of Brain, has deduced some interesting points about visions. His experiments were made upon a hysteric neurasthenic, in whom he was able to establish three personalties, or three conscious states, by hypnosis. Prince divided the visions produced into those of conscious or unconscious visual experiences, those newly created from past experiences not visual but from some other sense experience, and those without known past experiences. The visions did not confine themselves to the one class; frequently two classes were associated at the same time. Probably, as Prince contends, Joan of Arc and many other religious enthusiasts had read or heard of some particular act or scene, and then in their own way created some individual visual

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