How we see
- Creators
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Andersen, Richard A.
Abstract
The visual world is imaged on the retinas of our eyes. However, "seeing"' is not a result of neural functions within the eyes but rather a result of what the brain does with those images. Our visual perceptions are produced by parts of the cerebral cortex dedicated to vision. Although our visual awareness appears unitary, different parts of the cortex analyze color, shape, motion, and depth information. There are also special mechanisms for visual attention, spatial awareness, and the control of actions under visual guidance. Often lesions from stroke or other neurological diseases will impair one of these subsystems, leading to unusual deficits such as the inability to recognize faces, the loss of awareness of half of visual space, or the inability to see motion or color.
Additional Information
© 2008 IEEE. Reprinted with permission. Date Published in Issue: 2008-08-26. I thank David Bradley for discussion and help with figures, and Sylvie Gertmenian for editorial assistance. This contribution, originally presented at our 1998 Big Sky Aerospace Conference, is to informn those readers to whom the subject may be unfamiliar and to provide a benchmark for readers working in this field.Attached Files
Published - ANDieeeaesm08.pdf
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Additional details
- Eprint ID
- 11524
- Resolver ID
- CaltechAUTHORS:ANDieeeaesm08
- Created
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2008-08-30Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field