... as in normal vision). In this respect they differ slightly from the medical definition, which defines entoptic phenomena as ... Entoptic was chosen by author David Lewis-Williams due to its origin from Greek meaning "coming from within". There has been a ... Entoptic Phenomena are interpreted in ways that can be understood, matched to objects or ideas that may be familiar in day-to- ... "Subjective Visions and the Source of Irish Megalithic Art." in Antiquity 69, pp. 539-549. Lewis-Williams, D., 2002. The Mind in ...
Enhanced entoptic phenomena. At least 1 of the following: excessive floaters in both eyes, excessive blue field entoptic ... Nyctalopia; impaired night vision. Symptoms are not consistent with typical migraine aura. Symptoms are not better explained by ... Other common symptoms are palinopsia, enhanced entoptic phenomena, photophobia, and tension headaches. The condition is ...
Tyler, CW (1978). "Some new entoptic phenomena". Vision Research. 18 (12): 1633-9. doi:10.1016/0042-6989(78)90255-9. PMID ... Biosemiotics Closed-eye hallucination - Class of hallucination Entoptic phenomenon - Visual effect whose source is within the ...
It is important to note that this is not a scientific explanation for the more complex visions that may arise. These entoptic ... Vision of the cultivation of awareness. Vision of the cessation of clinging to reality. At the end of the fourth vision, the ... These visions often include Tibetan symbols like deities and mandalas. This way of experiencing visions is very different from ... The space in all external visions. The space in the visions we experience in the bardo. The first things a practitioner will ...
Entoptic+Vision at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Picture of the entoptic phenomenon: ... Diagram of entoptic subjective visual phenomena Video describing history and science of first entoptic viewing technique Video ... Blue field entoptic phenomenon has the appearance of tiny bright dots moving rapidly along squiggly lines in the visual field. ... Because entoptic images are caused by phenomena within the observer's own eye, they share one feature with optical illusions ...
Annual Review of Vision Science. 1: 499-518. doi:10.1146/annurev-vision-082114-035742. PMC 5082990. PMID 27795997. It is now ... Coppola, D; Purves, D (1996). "The Extraordinarily Rapid Disappearance of Entoptic Images". Proceedings of the National Academy ... The fovea is typically located at the center of the retina and is the point of clearest vision. The species in which fixational ... doi:10.1146/annurev-vision-082114-035742. PMC 5082990. PMID 27795997. Alexander, R. G.; Martinez-Conde, S. (2019). "Fixational ...
... inspired by entoptic phenomena. The method was invented by Dolfi Trost, who as the subtitle of his 1945 book ("Vision dans le ... Examples include entoptic graphomania, fumage and the movement of liquid down a vertical surface. Surrealism describes as " ... "Entoptic phenomena". Retrieved 2007-10-03. Prügel, Roland (2008). (Google Books). ISBN 9783412164065. Conroy, Matthew. "Comment ... A Vision and much of his later poetry, but Yeats was not a surrealist. In French surrealism, André Breton and Philippe Soupault ...
In normal vision, diffraction through eyelashes - and due to the edges of the eyelids if one is squinting - produce many ... This is classified as an entoptic phenomenon. A cross screen filter, also known as a star filter, creates a star pattern using ... causing what is known as the starburst effect or sunstars in photographs and in vision. They are artifacts caused by light ...
Vision). ... The blue field entoptic phenomenon is an entoptic phenomenon ... Entoptic phenomenon Floater Scheerer, Richard (1924). "Die entoptische Sichtbarkeit der Blutbewegungen im Auge und ihre ... Riva, C. E.; Petrig, B. (1980). "Blue field entoptic phenomenon and blood velocity in the retinal capillaries". Journal of the ... Hafez, Ali (2009). "Blue Field Entoptic Simulation". In R. N. Weinreb (ed.). Ocular Blood Flow in Glaucoma. Kugler Publications ...
The implication of this is that entoptic phenomena will be understood differently in different cultures. The final stage is one ... Lewis-Williams, J. D.; Dowson, T. A. (1993). "On Vision and Power in the Neolithic: Evidence From the Decorated Monuments". ... ISBN 978-1-86825-178-0. Lewis-Williams, J.D. (1996). "Harnessing the brain: vision and shamanism in Upper Palaeolithic Western ... entoptic phenomena in Upper Palaeolithic art (1988). Lewis-Williams has studied much Upper Palaeolithic rock art in France ...
Observations and Experiments Investigating the Physiology of Senses and New Subjective Reports about Vision, which contributed ... and published in 1823 description of several entoptic phenomena. He published two volumes, ...
... vision, binocular MeSH G11.697.677.911.730 - vision, entoptic MeSH G11.697.677.911.780 - vision, monocular MeSH G11.697.677.911 ... vision MeSH G11.561.796.929.300 - phosphenes MeSH G11.561.796.929.800 - vision, entoptic MeSH G11.561.826.587 - sleep ... vision disparity MeSH G11.697.716.079 - accommodation, ocular MeSH G11.697.716.154 - adaptation, ocular MeSH G11.697.716.154. ... vision MeSH G11.697.677.911.500 - phosphenes MeSH G11.697.677.911.700 - ...
Most vision researchers believe that phosphenes result from the normal activity of the visual system after stimulation of one ... Entoptic Phenomena in Upper Palaeolithic Art [and Comments and Reply]". Current Anthropology. 29 (2): 201-245. doi:10.1086/ ... Nicholson, Philip T. (2002). "The Soma Code, Part III: Visions, Myths, and Drugs". Electronic Journal of Vedic Studies. 8 (3): ... They argued that non-figurative art of the Upper Paleolithic depicts visions of phosphenes and neurological "form constants", ...
Blurred vision from cycloplegia and concomitant photophobia often persist for some days afterward. Long term use of ... textured surfaces and insect or spider-like forms likely deriving from entoptic phenomena and form constants; and vivid ... Visions caused by anticholinergics (including Atropa alkaloids) are often characterised by the following: warping or waving of ...
CEV does not seem to be related to the "sprites" (blue field entoptic phenomenon) that can be seen as dots darting around when ... Image burn-in occurs when very bright objects lie in one's field of vision, and should not be confused with closed-eye ... When seen overlaid onto the physical world, this CEV noise does not obscure physical vision at all,[citation needed] and in ... CEV does not include entoptic phenomena such as "floaters", which are instead caused by opacities in the vitreous humour and ...
... vision MeSH F02.830.816.929.300 - phosphenes MeSH F02.830.816.929.800 - vision, entoptic MeSH F02.830.855 - sleep MeSH F02.830. ... vision disparity MeSH F02.463.593.932.869.435 - form perception MeSH F02.463.593.932.869.435.110 - contrast sensitivity MeSH ...
... entoptic phenomena). Opponents mainly attack the comparisons made between Palaeolithic cultures and present-day shamanistic ... the human/animal hybrids and geometrical symbols were interpreted within this framework as the visions a shaman would see while ...
Color vision Computer vision Depth perception Entoptic phenomenon Gestalt psychology Lateral masking Looming Naked eye Machine ... daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible ... Wikimedia Commons has media related to Sight and Vision. Wikiquote has quotations related to Vision. Look up vision in ... Resource for Research in Human and Animal Vision A collection of resources in vision science and perception Vision and ...
... an entoptic phenomenon that enables perception of polarizing light. The group of xanthophylls includes (among many other ... certain xanthophylls may be converted to hydroxylated retinal-analogues that function directly in vision. For example, with the ...
Le Floch, A; Ropars G; Enoch J; Lakshminarayanan V (2010). "The polarization sense in human vision". Vision Res. 50 (20): 2048- ... Haidinger's brush, more commonly known as Haidinger's brushes is an image produced by the eye, an entoptic phenomenon, first ... It typically occupies roughly 3-5 degrees of vision, about twice or three times the width of one's thumb held at arm's length. ...
Looking up/down and left/right will cause the floaters to leave the direct field of vision as the vitreous humour swirls around ... Blue field entoptic phenomenon, alias Scheerer's phenomenon - tiny bright dots moving quickly in the visual field. Ocular ... The use of a laser also poses significant risks to the vision in what is otherwise a healthy eye." Enzymatic vitreolysis has ... As these objects exist within the eye itself, they are not optical illusions but are entoptic phenomena (caused by the eye ...
Much of the graphics software seems to permit a direct translation of the psychedelic vision. The "digital revolution" was ... and other entoptic motifs Repetition of motifs Innovative typography and hand-lettering, including warping and transposition of ... Computer art has allowed for an even greater and more profuse expression of psychedelic vision. Fractal generating software ... serious psychedelic artists are demonstrating that there is tangible technique to obtaining visions, and that technique is the ...
... a scintillating scotoma involves repeated bouts of temporary diminished vision or blindness and affects vision from both eyes, ... Amaurosis fugax Entoptic phenomenon Scintillating scotoma Grosberg BM, Solomon S, Lipton RB (August 2005). "Retinal migraine". ... Ocular or retinal migraines happen in the eye, so only affect the vision in that eye, while visual migraines occur in the brain ... After each episode, normal vision returns. It may be difficult to read and dangerous to drive a vehicle while retinal migraine ...
... also called photopic vision). The rod responses are saturated at daylight levels and do not contribute to pattern vision. ... This is known as the blue field entoptic phenomenon (or Scheerer's phenomenon). Between the ganglion-cell layer and the rods ... called scotopic vision). The illumination in most office settings falls between these two levels and is called mesopic vision. ... In normal human vision, the spectral sensitivity of a cone falls into one of three subtypes, often called blue, green, and red ...
In 2019 his book Music of Possibility was published by Vision Edition, followed in 2023 by Transforming Moments from the same ... electronic music entoptic (2017-18) for percussion and electronics disquiet (2018) electronic music membrane (2017-19) for ... vision and with a projected total duration of over six hours, of which the first (NO), third (cell), fifth (Mesopotamia), sixth ...
The process involves moving the stone across the visual field to reveal a yellow entoptic pattern on the fovea of the eye. ... This involves a celestial vision with three highly cosmological knights, recalling the horsemen of the Apocalypse. It has been ... Gábor Horváth; Dezsö Varjú (12 January 2004). Polarized Light in Animal Vision: Polarization Patterns in Nature. Springer. p. ...
Dronfield defended the entoptic explanation by way of ethnographic comparison. Examining art produced by a society that placed ... Dronfield, J.C. (1995). "Subjective vision and the source of Irish megalithic art". Antiquity. Vol. 69. The Antiquity Trust. pp ... One suggestion is that the motifs found in the rock art of the British Isles are depictions of phosphenes, entoptic phenomenon ... Lewis-Williams, David; Dowson, T. (1993). "On vision and power in the Neolithic: Evidence from the decorated monuments". ...
During the second phase of trance people try to make sense of the entoptic phenomena. They would elaborate the shape they had ' ... Garlake, P.S. (1995). The Hunter's Vision. London: British Museum Press. Guenther, M. (1999). Tricksters & Trancers: Bushman ... They found that entoptic phenomena can occur through rhythmic dancing, music, sensory deprivation, hyperventilation, prolonged ... Shamans experiencing the second phase of trance would incorporate the natural world into their entoptic phenomena, visualizing ...
"Octopus vision, it's in the eye (or skin) of the beholder". Archived from the original on 2018-07-21. Retrieved 2018-05-10. ... Aesthesis Apperception Attention Chemesthesis Extrasensory perception Entoptic phenomenon Increased sensitivity: Hyperacusis ... Therefore, our low-light vision is-in essence-in grayscale. In other words, in a dark room, everything appears as a shade of ... The three types of cone opsins, being sensitive to different wavelengths of light, provide us with color vision. By comparing ...
... the same entoptic phenomenon as Purkyne's blue arcs near an unsteady red-colored pointlike lightsource), Mädler's square (a ... a bright magenta colored spot at the center of vision, when looking at a deep purple or violet background or through a violet ...