Summary
In the context of the quantum theory of vision scalers, coincidence scalers, adapting coincidence scalers and dead time mechanisms have been used as basic constituents of network models: van de Grind et al. (1970a), Koenderink et al. (1970a, b). The possibilities that these devices offer to construct network models of vision are presently further analysed. First of all a mechanistic analysis is given of the event rate reduction characteristics of “dead time boxes”. Next the interaction of these devices with scalers is discussed in relation with a number of “fluctuation models” of vision proposed in the literature. A critical evaluation of these fluctuation models shows an important defect of most of them, viz. that unrealizable detection criteria are postulated. Our reconsideration of this detection problem then leads to the proposal of some specific realizable detectors. An application of the developed theory of mechanisms (‘machines’) to the explanation of the flash detection characteristics of Limulus concludes the paper. Applications of the presented ideas to neural theory and modelling are treated hi a separate paper (van de Grind et al., 1970b) and for applications of the theory to psychophysically oriented visual modelling studies the reader is referred to Koenderink et al. (1970a, b) and van de Grind et al. (1970a).
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van de Grind, W.A., Koenderink, J.J., Landman, H.A.A. et al. The concepts of scaling and refractoriness in psychophysical theories of vision. Kybernetik 8, 105–122 (1971). https://doi.org/10.1007/BF00272291
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DOI: https://doi.org/10.1007/BF00272291