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5 July 1989Optical Model Of Eye Movements During Visual Perception
During seeing the eye scanns incessantly over the inspecting scene. These eye movements represent an automatic process, consisting of two phases: proper saccadic movements and fixation period during which two processes take place. These are sampling the scene and processing the visual information by the central part of the retina and next by corresponding structures of the brain. At the beginning the fixation points are randomly distributed but with time these are grouped round peculiar parts of the scene. The movements are unavoided: When the eye steps for a tine the visual perception disappeares, the subject dont see anything.
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Barbara Smelinska, "Optical Model Of Eye Movements During Visual Perception," Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); https://doi.org/10.1117/12.951065