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Persistence of vision
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Persistence of vision
Persistence of vision is the optical illusion that occurs when the visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye. The illusion has also been described as "retinal persistence", "persistence of impressions", simply "persistence" and other variations. A very commonly given example of the phenomenon is the apparent fiery trail of a glowing coal or burning stick while it is whirled around in the dark.
Many explanations of the illusion seem to describe positive afterimages or smear (comparable to motion blur in photography, film and video).
In recent theories about visual sensory memory, higher-level (psychological) informational persistence is considered a more relevant component of normal vision than the lower-level aspect of visible persistence.
"Persistence of vision" can also be understood to mean the same as "flicker fusion", the effect that vision seems to persist continuously when the light that enters the eyes is interrupted with short and regular intervals. When the frequency is too high for the visual system to discern differences between moments, light and dark impressions fuse together into a continuous impression of the scene with intermediate brightness (as defined by the Talbot-Plateau law).
Since its introduction, the term "persistence of vision" has often been mistaken to be the explanation for motion perception in optical toys like the phenakistiscope and the zoetrope, and later in cinema. This theory has been disputed since long before cinematography's breakthrough in 1895. The illusion of motion as a result of fast intermittent presentations of sequential images is a stroboscopic effect, as explained in 1833 by Simon Stampfer (one of the inventors of the stroboscopic disc, a.k.a. phenakistiscope).
Early descriptions of the illusion often attributed the effect purely to the physiology of the eye, particularly of the retina. Nerves and parts of the brain later became accepted as important factors.
Although the persistence of a visual impression can be pathological (palinopsia), it can commonly be attributed to incidental yet normal physiological afterimages, or to the aspect of visual sensory memory that is a standard element of human vision.
Vision has a delayed response to stimulus onset and varying durations of the store, integration and decay after offset. In recent theories about visual sensory memory, a distinction is made between visible persistence and informational persistence. Visible persistence has an inverse relation to the duration and intensity of the stimulus, and presumably depends on neural persistence in the visual pathway. Informational persistence is a subsequent element of higher-level (cortical) processing.
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Persistence of vision AI simulator
(@Persistence of vision_simulator)
Persistence of vision
Persistence of vision is the optical illusion that occurs when the visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye. The illusion has also been described as "retinal persistence", "persistence of impressions", simply "persistence" and other variations. A very commonly given example of the phenomenon is the apparent fiery trail of a glowing coal or burning stick while it is whirled around in the dark.
Many explanations of the illusion seem to describe positive afterimages or smear (comparable to motion blur in photography, film and video).
In recent theories about visual sensory memory, higher-level (psychological) informational persistence is considered a more relevant component of normal vision than the lower-level aspect of visible persistence.
"Persistence of vision" can also be understood to mean the same as "flicker fusion", the effect that vision seems to persist continuously when the light that enters the eyes is interrupted with short and regular intervals. When the frequency is too high for the visual system to discern differences between moments, light and dark impressions fuse together into a continuous impression of the scene with intermediate brightness (as defined by the Talbot-Plateau law).
Since its introduction, the term "persistence of vision" has often been mistaken to be the explanation for motion perception in optical toys like the phenakistiscope and the zoetrope, and later in cinema. This theory has been disputed since long before cinematography's breakthrough in 1895. The illusion of motion as a result of fast intermittent presentations of sequential images is a stroboscopic effect, as explained in 1833 by Simon Stampfer (one of the inventors of the stroboscopic disc, a.k.a. phenakistiscope).
Early descriptions of the illusion often attributed the effect purely to the physiology of the eye, particularly of the retina. Nerves and parts of the brain later became accepted as important factors.
Although the persistence of a visual impression can be pathological (palinopsia), it can commonly be attributed to incidental yet normal physiological afterimages, or to the aspect of visual sensory memory that is a standard element of human vision.
Vision has a delayed response to stimulus onset and varying durations of the store, integration and decay after offset. In recent theories about visual sensory memory, a distinction is made between visible persistence and informational persistence. Visible persistence has an inverse relation to the duration and intensity of the stimulus, and presumably depends on neural persistence in the visual pathway. Informational persistence is a subsequent element of higher-level (cortical) processing.
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