eye-movement phosphene
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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
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
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
Floater — For other uses, see Floater (disambiguation). Floater Classification and external resources Simulated image of floaters against a blue sky ICD 10 H … Wikipedia
Visual system — The visual system includes the eyes, the connecting pathways through to the visual cortex and other parts of the brain. The illustration shows the mammalian system. The visual system is the part of the central nervous system which enables… … Wikipedia
Afterimage — For other uses, see Afterimage (disambiguation). If the viewer stares at this image for 20 60 seconds and stares at a white object a negative afterimage will appear (in this case being cyan on magenta). This can also be achieved by the viewer… … Wikipedia
sensory reception, human — Introduction means by which humans react to changes in external and internal environments. Ancient philosophers called the human senses “the windows of the soul,” and Aristotle described at least five senses sight, hearing, smell, taste, and… … Universalium
Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun … Wikipedia
List of medical roots, suffixes and prefixes — This is a list of roots, suffixes, and prefixes used in medical terminology, their meanings, and their etymology. There are a few rules when using medical roots. Firstly, prefixes and suffixes, primarily in Greek, but also in Latin, have a… … Wikipedia
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
