The Ferrier Lecture, 1992. Seeing depth with two eyes: stereopsis
- 22 August 1994
- journal article
- review article
- Published by The Royal Society in Proceedings Of The Royal Society B-Biological Sciences
- Vol. 257 (1349), 205-214
- https://doi.org/10.1098/rspb.1994.0117
Abstract
The primate's two eyes both point forward, and are a few centimetres apart. The task of extracting depth from two slightly dissimilar two-dimensional retinal images falls on the central nervous system. The mechanism is so effective that a good observer can detect, by stereopsis alone, depth differences of as small as 10 $\mu $m at a distance of 25 cm. Psychophysical and neurophysiological studies have begun to unravel the neural circuits in the brain which process the retinal signals to yield stereoscopic information.Keywords
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