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Proceedings Paper

Bio-inspired analog circuitry model of insect photoreceptor cells
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Paper Abstract

This paper describes the implementation of a robust adaptive photodetector circuit that mimics the characteristics of insect photoreceptors. The implementation of the photodetector circuit is an elaborated version of the mathematical model initially developed by van Hateren and Snippe. It consists of a linear photodetector, two divisive feedback loops and a static non-linearity stage. The photoreceptor circuit was rigorously tested under both steady-state and dynamic (natural scenes) conditions and the circuit parameters optimized such that the output was highly correlated to results obtained from fly photoreceptors observing an identical stimulus. The results show that this adaptive non-linear photoreceptor circuit is ideally suited to mimic the biological photoreceptors found in insects.

Paper Details

Date Published: 19 January 2006
PDF: 12 pages
Proc. SPIE 6036, BioMEMS and Nanotechnology II, 603613 (19 January 2006); doi: 10.1117/12.638464
Show Author Affiliations
Eng-Leng Mah, Centre for Biomedical Engineering, The Univ. of Adelaide (Australia)
Russell S. A. Brinkworth, Centre for Biomedical Engineering, The Univ. of Adelaide (Australia)
David O'Carroll, Centre for Biomedical Engineering, The Univ. of Adelaide (Australia)

Published in SPIE Proceedings Vol. 6036:
BioMEMS and Nanotechnology II
Dan V. Nicolau, Editor(s)

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