Reduction of the human detective quantum efficiency due to lateral neural interactions |
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| Authors: | B E A Saleh T E Cohn |
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| Institution: | (1) Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, USA;(2) School of Optometry, University of California, Berkeley, California, USA |
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| Abstract: | We present a simple representation of the lateral neural interactions of summation and subtraction in a situation involving quantum limited luminance increment detection. Lateral subtractive interactions would be expected to lower the measured quantum efficiency by up to a log unit. Lateral neural interactions can explain both the type and amount of decrease of human foveal quantum efficiency with target area reported by Cohn as well as the increase reported by Clark-Jones. |
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