stabilized retinal image

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A visual image that is prevented from moving on the retina by means of specially constructed contact lenses, so that the eye movements that occur continually during visual fixation (1), owing to various forms of physiological nystagmus, do not cause the image to move across the retina, the result being that vision fades away after about one second and is replaced by undifferentiated Eigengrau, although brief glimpses of the image or parts of it may reappear periodically, especially if the stabilization is not complete. This phenomenon, which was discovered simultaneously and independently by researchers in the US and England in 1952, is also called a fixed image, a stabilized image, or a stopped image. See also filling-in illusion.

Subjects: Psychology.

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