formed hallucination
   Also known as formed visual hallucination, formed vision, organized hallucination, and morphopsia. All five terms are used to denote a visual hallucination depicting a distinctive shape, pattern, object, or scene. Thus the category of formed hallucinations comprises the group of * geometric hallucinations, as well as the group of * complex visual hallucinations. The notion of formed hallucination derives from a classification of visual hallucinations that employs phe-nomenological form as a guiding principle. It is used in opposition to the notion of * unformed hallucination. Although it has traditionally been used with regard to the visual modality, the term formed hallucination can also denote an auditory hallucination which exceeds the level of static noise or * figments.
   References
   Ey, H. (1973). Traité des hallucinations. Tome 1. Paris: Masson et Cie., Éditeurs.

Dictionary of Hallucinations. . 2010.

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  • formed visual hallucination —    see formed hallucination …   Dictionary of Hallucinations

  • formed vision —    see formed hallucination …   Dictionary of Hallucinations

  • hallucination — The apparent, often strong subjective perception of an object or event when no such stimulus or situation is present; may be visual, auditory, olfactory, gustatory, or …   Medical dictionary

  • unformed hallucination —    Also known as unformed visual hallucination and unformed vision. All three terms are used to denote a visual hallucination depicting an amorphous shape or image. The term unformed hallucination derives from a classification of hallucinations… …   Dictionary of Hallucinations

  • simple hallucination —    Also referred to as elementary hallucination. Both terms are used to denote a hallucination of the lowest degree of complexity. In the auditory modality, simple hallucinations are known as * akoasms. Common examples of akoasms are clicking… …   Dictionary of Hallucinations

  • organized hallucination —    see formed hallucination …   Dictionary of Hallucinations

  • television-induced hallucination —    The notion of television induced hallucination refers to a type of hallucination uniquely provoked by television viewing. This type of hallucination is believed to be extremely rare. The first case report of hallucinations co occurring with… …   Dictionary of Hallucinations

  • visual hallucination —    Also referred to as vision. Both terms are indebted to the Latin noun visio, which means sight. They are used to denote a hallucination of sight. Historically, visual hallucinations have been divided into a multitude of types. Using their… …   Dictionary of Hallucinations

  • geometric hallucination —    Also known as geometrical hallucination, geometric visual hallucination, and optogeometric illusion. All four terms can be traced to the Greek noun geometria, which means land surveying. They are used to denote a * formed visual hallucination… …   Dictionary of Hallucinations

  • hemianopic hallucination —    Also known as hemianoptic hallucination, hemi anoptic optical hallucination, hemiopic hallucination, hemioptic hallucination, and hemihallucination. The term hemianopic hallucination is indebted to the Greek words hèmi (half), an (not), and… …   Dictionary of Hallucinations

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