- A term used to denote a type of synaesthesia characterized by a transient flash or spark of light (i.e. a *phosphene) which is triggered by a sudden sound. Sound phosphenes are typically perceived in a dark environment. A special variant is the * visual sleep start. The term sound phosphene is used in opposition to the terms *convergence phosphene, *flick phosphene, and *movement phosphene.ReferencesHarrison, J. (2001). Synaesthesia. The strangest thing. Oxford: Oxford University Press.
Dictionary of Hallucinations. J.D. Blom. 2010.
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phosphene — Also known as unstructured photopsia. The term phosphene comes from the Greek words phos (light) and phainein (to shine). It is used to denote a transient flash or spark of light, commonly referred to as seeing stars . Phosphenes are * visual… … Dictionary of Hallucinations
convergence phosphene — A term used to denote a *phosphene (i.e. seeing stars ) arising physiologically in association with convergence of the eyes. In 1978 the American neuroscientist Christopher W. Tyler proposed a distinction between two types of convergence… … Dictionary of Hallucinations
flick phosphene — Also known as eye movement phosphene. The term flick phosphene was introduced in or shortly before 1957 by the American ophthalmologist Bernard R. Nebel, who had observed the concomitant phenomenon in himself. The term is used to denote a type … Dictionary of Hallucinations
movement phosphene — A term introduced in or shortly before 1976 by the American neurologists Floyd A. Davis et al. to denote a type of * phosphene (i.e. a transient flash or spark of light) that may be evoked by eye movement. Etiologically, movement phosphenes… … Dictionary of Hallucinations
visual sleep start — A term used to denote a photopsia (i.e. a flash of light) which may occasionally accompany the * auditory sleep start. Phenomenologi cally, the visual sleep start shows certain similarities to the * sound phosphene. For a further explanation,… … Dictionary of Hallucinations
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