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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Multiplication noise in the human visual system at threshold - 3. The role of non-Poisson quantum fluctuations
Biological Cybernetics, Volume 44, No. 3, Year 1982
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Description
Several kinds of light used in vision experiments produce photon statistics that are distinctly non-Poisson. Representative examples are light from a cathode-ray tube and an image-intensifier device. For the class of vision experiments in which the photon statistics play an important role, excess fluctuations produced by such light sources can alter the observed results and obscure the visual mechanisms being studied. They must therefore be accounted for in a proper way. We use the results of a Hecht-Shlaer-Pirenne type experiment, carried out with modulated Poisson light, to illustrate the point. Sensitivity and modulation depth, as well as sensitivity and reliability, are shown to be traded against each other. Finally, we demonstrate that number-state light, which is comprised of photons of an ideal kind, provides the ultimate tool for extracting information about the intrinsic noise distribution in the visual system at threshold. The state of the art in producing such light is discussed. © 1982 Springer-Verlag.
Authors & Co-Authors
Teich, Malvin Carl
United States, New York
Columbia University
McGill, William J.
United States, La Jolla
Department of Psychology
Statistics
Citations: 33
Authors: 2
Affiliations: 4
Identifiers
Doi:
10.1007/BF00344271
ISSN:
14320770
Study Approach
Quantitative