Comparative study of information capacity for biophysical and silicon photoreceptors

Pamela Abshire; Andreas G. Andreou

doi:10.1109/ISCAS.2000.857384

Comparative study of information capacity for biophysical and silicon photoreceptors

Pamela Abshire
, Andreas G. Andreou

Electrical Engineering

Johns Hopkins University

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

We employ communication theory to analyze information processing in a silicon photoreceptor and in a biophysical model of the blowfly photoreceptor. We take channel capacity to be a quantitative measure of performance which is independent of any particular task. The physical instantiation of any channel determines the noise, the signal constraints and the channel capacity. The channel model for each of the two systems is a cascade of linear bandlimiting sections followed by additive noise. Filters and noise are modelled from first principles when possible. Parameters for the blowfly model are determined from biophysical data available in the literature. Such a comparative study is a first step towards understanding the performance, and the tradeoffs between system performance and associated costs such as size, reliability and energy requirements for natural and engineered sensory systems.

Original language	English
Pages (from-to)	V-145-V-148
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	5
DOIs	https://doi.org/10.1109/ISCAS.2000.857384
State	Published - 2000
Event	Proceedings of the IEEE 2000 International Symposium on Circuits and Systems, ISCAS 2000 - Geneva, Switz, Switzerland Duration: May 28 2000 → May 31 2000

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10.1109/ISCAS.2000.857384

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abstract = "We employ communication theory to analyze information processing in a silicon photoreceptor and in a biophysical model of the blowfly photoreceptor. We take channel capacity to be a quantitative measure of performance which is independent of any particular task. The physical instantiation of any channel determines the noise, the signal constraints and the channel capacity. The channel model for each of the two systems is a cascade of linear bandlimiting sections followed by additive noise. Filters and noise are modelled from first principles when possible. Parameters for the blowfly model are determined from biophysical data available in the literature. Such a comparative study is a first step towards understanding the performance, and the tradeoffs between system performance and associated costs such as size, reliability and energy requirements for natural and engineered sensory systems.",

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T1 - Comparative study of information capacity for biophysical and silicon photoreceptors

AU - Abshire, Pamela

AU - Andreou, Andreas G.

PY - 2000

Y1 - 2000

N2 - We employ communication theory to analyze information processing in a silicon photoreceptor and in a biophysical model of the blowfly photoreceptor. We take channel capacity to be a quantitative measure of performance which is independent of any particular task. The physical instantiation of any channel determines the noise, the signal constraints and the channel capacity. The channel model for each of the two systems is a cascade of linear bandlimiting sections followed by additive noise. Filters and noise are modelled from first principles when possible. Parameters for the blowfly model are determined from biophysical data available in the literature. Such a comparative study is a first step towards understanding the performance, and the tradeoffs between system performance and associated costs such as size, reliability and energy requirements for natural and engineered sensory systems.

AB - We employ communication theory to analyze information processing in a silicon photoreceptor and in a biophysical model of the blowfly photoreceptor. We take channel capacity to be a quantitative measure of performance which is independent of any particular task. The physical instantiation of any channel determines the noise, the signal constraints and the channel capacity. The channel model for each of the two systems is a cascade of linear bandlimiting sections followed by additive noise. Filters and noise are modelled from first principles when possible. Parameters for the blowfly model are determined from biophysical data available in the literature. Such a comparative study is a first step towards understanding the performance, and the tradeoffs between system performance and associated costs such as size, reliability and energy requirements for natural and engineered sensory systems.

UR - https://www.scopus.com/pages/publications/0033685068

U2 - 10.1109/ISCAS.2000.857384

DO - 10.1109/ISCAS.2000.857384

M3 - Conference article

AN - SCOPUS:0033685068

SN - 0271-4310

VL - 5

SP - V-145-V-148

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - Proceedings of the IEEE 2000 International Symposium on Circuits and Systems, ISCAS 2000

Y2 - 28 May 2000 through 31 May 2000

ER -

Comparative study of information capacity for biophysical and silicon photoreceptors

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