photism

photism
   The term photism comes from the Greek verb photizein, which means to give light, to illuminate. It is used in * synaesthesia research to denote a hallucinated colour sensation triggered by a sensory stimulus which affects a different sensory modality. In accordance with the sensory modality involved, photisms are divided into categories such as olfactory or smell photism, taste photism, auditory or sound photism, tactile or touch photism, pressure photism, kinaesthetic or movement photism, and temperature photism. A special type of photism in which light is seen as emanating from one's body is called *body photism. The term photism is used in opposition to terms such as * phonism, * gustatism, and * olfactism.
   References
   Cytowic, R.E. (2002). Synesthesia. A union ofthe senses. Second edition. Cambridge, MA: MIT Press.
   Stoddart, W.H.B. (1926). Mind and its disorders. Fifth edition. London: H.K. Lewis & Co.

Dictionary of Hallucinations. . 2010.

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Look at other dictionaries:

  • Photism — Pho tism, n. [Gr. ? illumination.] (Psycol.) A luminous image or appearance of a hallucinatory character. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • photism — /foh tiz euhm/, n. Psychol. a form of synesthesia in which a visual sensation, as of color or form, is produced by the sense of touch, hearing, etc. [1890 95; < Gk photismós illumination, equiv. to phot(ízein) to give light + ismos ISM] * * * …   Universalium

  • photism — noun /ˈfəʊtɪzəm/ a) A luminous appearance, image or subjective perception of a hallucinatory nature. I refer to hallucinatory or pseudo hallucinatory luminous phenomena, photisms, to use the term of the psychologists. b) The color that a… …   Wiktionary

  • photism — Production of a sensation of light or color by a stimulus to another sense organ, such as of hearing, taste, or touch. SYN: pseudophotesthesia. * * * pho·tism fōt .iz əm n …   Medical dictionary

  • photism — n. visual perception of colors resulting from nonvisual stimulation (Psychiatry) …   English contemporary dictionary

  • photism — pho·tism …   English syllables

  • photism — n. a hallucinatory sensation or vision of light. Etymology: Gk photismos f. photizo shine f. phos photos light …   Useful english dictionary

  • pressure photism —    The term pressure photism is indebted to the Greek verb photizein, which means to give light, to illuminate. It used to denote a type of *synaesthesia characterized by a hallucinated colour sensation (i.e. a *photism) which is triggered by a… …   Dictionary of Hallucinations

  • body photism —    A term used to denote a type of *photism (i.e. a hallucinated patch of light) consisting of a light emanating from one s own body. Body pho tism has occasionally been reported in association with * out of body experiences. It should not be… …   Dictionary of Hallucinations

  • movement photism —    A term used to denote a type of *synaesthesia characterized by a hallucinated light or colour sensation (i.e. a * photism) triggered by a regular kinaesthetic sensation (movement).    References    Cytowic, R.E. (2002). Synesthesia. A union of …   Dictionary of Hallucinations

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