entoptic phenomenon
Słownik biologicznyentoptic phenomenon rzeczownik
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Investigation of the source of the blue field entoptic phenomenon.
People would experience geometric shapes commonly known as entoptic phenomena.
The entoptic phenomenon is a normal phenomenon that some people may become suddenly aware of.
During the second phase of trance people try to make sense of the entoptic phenomena.
The signs of all times: entoptic phenomena in Upper Palaeolithic art.
Since these objects exist within the eye itself, they are not optical illusions but are entoptic phenomena.
In this respect they differ slightly from the medical definition, which defines entoptic phenomena as only applying to sources within the eye, not the brain.
Yet, there is enough commonality between the main entoptic phenomena that their physical origin is now well-understood.
These images are, therefore, entoptic phenomena.
The blue field entoptic phenomenon has the appearance of tiny bright dots moving rapidly along squiggly lines in the visual field.
It is to be distinguished from "entoptic" methods of drawing or art-making, inspired by entoptic phenomena.
The "snow" is more generalized than the "blue-sky sprites" or "worms" seen in the blue field entoptic phenomenon.
Lutein may play a role in Haidinger's brush, an entoptic phenomenon that allows humans to detect polarized light.
Entoptic phenomena (archaeology)
Blue field entoptic phenomenon, alias Scheerer's phenomenon - tiny bright dots moving quickly in the visual field.
Shamans experiencing the second phase of trance would incorporate the natural world into their entoptic phenomena, visualizing honeycombs or other familiar shapes.
Although the phenomenon description seems to correlate with Prisoner's cinema or the Blue Field Entoptic phenomenon.
With mathematician Johann Benedict Listing (1808-1882), he published a treatise on entoptic phenomena and cataract.
In archaeology, the term entoptic phenomena relates to visual experiences derived from within the eye or brain (as opposed to externally, as in normal vision).
They found that entoptic phenomena can occur through rhythmic dancing, music, sensory deprivation, hyperventilation, prolonged and intense concentration and migraines.
Picture of the entoptic phenomenon: Vitreous Floaters (PDF file)
He conducted research of entoptic phenomenon, Purkinje images, the etiology of myopia, and Listing's law of ocular movement.
Haidinger's brush is an entoptic phenomenon first described by Austrian physicist Wilhelm Karl von Haidinger in 1844.
In 1988, David Lewis-Williams and T. A. Dowson published an article about phosphenes and other entoptic phenomena.
Most sighted humans can in fact learn to roughly detect large areas of polarization by an effect called Haidinger's brush, however this is considered an entoptic phenomenon rather than a separate sense.