| Popis: |
In this paper a quanta coincidence model of absolute threshold vision is presented, the properties of which include not only Ricco's law and Piper's law, but also the deviations from Ricco's law which were recently found ( Martinez, Sturr and Schmalback, 1977 : Scholtes and Bouman, 1977 ). Furthermore, it is shown that an apparent paradox for double spot measurements ( Sakitt, 1971 ) can be solved if. in the retina, discrete summation areas are assumed instead of summation as a function of the distance between quantum absorptions. |
