retinogenic phenomenon

   Also known as idioretinal phenomenon and idioretinal sensation. The term retinogenic phenomenon is indebted to the Latin noun retina (little net) and the Greek noun genesis (creation, origin). It is used to denote a " visual hallucination or "illusion, often "simple or " geometric in nature, which is attributed to a (physiological or pathological) process within the retina. Some examples of retinogenic phenomena are " afterimages, the Bjerrum scotoma, the "idioretinal light, "Haidinger's brushes, and " phosphenes mediated by the retina. Retino-genic phenomena are classified as "entoptic phenomena.
   Zuckerman, M. (1969). Hallucinations, reported sensations, and images.In: Sensory deprivation: Fifteen years ofresearch. Edited by Zubek, J.P. New York, NY: Appleton-Century-Crofts.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • idioretinal phenomenon —    see retinogenic phenomenon …   Dictionary of Hallucinations

  • entoptic phenomenon —    Also known as entoptic imagery, entoptic image, and entoptic form. All four terms are indebted to the Greek words entos (inside) and opsis (seeing). Traditionally the expression entoptic phenomenon is used to denote any member of a group of… …   Dictionary of Hallucinations

  • Eigengrau —    Also known as Eigenlicht, light dust, light chaos, dark light, brain light, and idioretinal light. The term Eigengrau comes from the German eigen (one s own), and grau (gray), and translates loosely as intrinsic gray . The term was introduced… …   Dictionary of Hallucinations

  • idioretinal sensation —    see retinogenic phenomenon …   Dictionary of Hallucinations

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