Boahen, Kwabena A. and Andreou, Andreas G. (1992) A Contrast Sensitive Silicon Retina with Reciprocal Synapses. In: Advances in Neural Information Processing Systems 4 (NIPS 1991). Advances in Neural Information Processing Systems. No.4. Morgan Kaufmann , San Mateo, CA, pp. 764-770. ISBN 1-55860-222-4. https://resolver.caltech.edu/CaltechAUTHORS:20160119-165146283
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Abstract
The goal of perception is to extract invariant properties of the underlying world. By computing contrast at edges, the retina reduces incident light intensities spanning twelve decades to a twentyfold variation. In one stroke, it solves the dynamic range problem and extracts relative reflectivity, bringing us a step closer to the goal. We have built a contrast-sensitive silicon retina that models all major synaptic interactions in the outer-plexiform layer of the vertebrate retina using current-mode CMOS circuits: namely, reciprocal synapses between cones and horizontal cells, which produce the antagonistic center/surround receptive field, and cone and horizontal cell gap junctions, which determine its size. The chip has 90 x 92 pixels on a 6.8 x 6.9mm die in 2μm n-well technology and is fully functional.
Item Type: | Book Section | ||||||
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Additional Information: | © 1992 Morgan Kaufmann. | ||||||
Series Name: | Advances in Neural Information Processing Systems | ||||||
Issue or Number: | 4 | ||||||
Record Number: | CaltechAUTHORS:20160119-165146283 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160119-165146283 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 63786 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | INVALID USER | ||||||
Deposited On: | 20 Jan 2016 00:56 | ||||||
Last Modified: | 03 Oct 2019 09:31 |
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