Riggs, Lorrin A. Department of Psychology, Brown University, Providence, Rhode Island.
Sternheim, Charles E. Department of Psychology, University of Maryland, College Park, Maryland.
Last reviewed:October 2019
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- Visual stimuli
- Anatomical basis for vision
- Scotopic and photopic vision
- Scotopic vision
- Normal photopic vision
- Space and time perception
- Space perception
- Time perception
- Related Primary Literature
- Additional Reading
The sense of sight, which perceives the form, color, size, movement, and distance of objects. Vision is the sensory ability allowing the qualities of an object that constitute its appearance to be perceived (Fig. 1). Of all the senses, vision provides the most detailed and extensive information about the environment. In the higher animals, especially the birds and primates, the eyes and the visual areas of the central nervous system have developed a size and complexity far beyond the other sensory systems. Visual impairments can range from relatively minor abnormalities of visual acuity (the ability to see fine details of an object) to complete blindness. See also: Binocular vision disorders; Central nervous system; Color vision; Eye (invertebrate); Eye (vertebrate); Perception; Primate color vision; Sensation; Sense organ; Vertebrate eye development; Visual impairment
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