Reduction of the human detective quantum efficiency due to lateral neural interactions

摘要

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 ofdecreaseof human foveal quantum efficiency with target area reported by Cohn as well as theincreasereported by Clark-Jones.