geometric visual hallucination

Dictionary of Hallucinations. . 2010.

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  • 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

  • Hallucination — For other uses, see Hallucination (disambiguation). Hallucination Classification and external resources My eyes at the moment of the apparitions by August Natterer …   Wikipedia

  • photically induced hallucination —    Also known as flicker induced hallucination, hallucinatory flicker induced experiences, and Purkinje s colours. All four terms are used to denote a type of *geometric visual hallucination induced by a flickering light, such as that produced by …   Dictionary of Hallucinations

  • 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… …   Dictionary of Hallucinations

  • closed-eye hallucination —    Also known as closed eye visual hallucination and closed eye visualization. All three terms are used to denote a type of *visual hallucination experienced exclusively when the eyes are closed or when there is perfect darkness around. Some… …   Dictionary of Hallucinations

  • hypoglycaemia-induced hallucination —    Hypoglycaemia is also written as hypoglycemia. Both terms stem from the Greek words hupo (below, beneath), gleukos (must), and haima (blood). They translate as low blood sugar . The introduction of the term hypoglycaemia is commonly attributed …   Dictionary of Hallucinations

  • ayahuasca-induced hallucination —    Ayahuasca is known under many names, including ayawaska, bejuco de oro, caapi, and yajé. The name ayahuasca is the hispanized version of ayawaska, which is Quechua for vine of the soul or vine of the spirits . Both names refer to a… …   Dictionary of Hallucinations

  • complex hallucination —    A term used to denote a phenomenologically rich and often well organized type of hallucination that is confined to a single sensory modality. Theoretically, complex hallucinations may present in any of the sensory modalities. It is customary,… …   Dictionary of Hallucinations

  • primitive hallucination —    A term used (and possibly also introduced) in 1930 by the German psychologists Konrad Zucker and Julius Zâdor in the context of a study of * mescaline induced hallucinations to denote a relatively simple type of hallucination. Judging by the… …   Dictionary of Hallucinations

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