Abstract

The dissertation sketches a solution to the problem of pictorial representation. By appealing to the visual system as an information processing system, we understand how it is that certain sorts of pictures are seen as representing their subjects. ;The first chapter introduces the problem and discusses existing philosophical treatment of pictorial representation. Conventionalist arguments against the possibility of a naturalist account are refuted, thus clearing the way for a naturalist, realist, "resemblance" view of pictorial representation. ;The second chapter discusses the notion of the modularity of mind. Aspects of perceptual holism are criticized. I support the modularist claim that one can make a useful distinction between observation and inference without suffering familiar positivist problems. I suggest that much of vision can fruitfully be studied in isolation from other mental processes. ;The third and fourth chapters provide a contemporary account of human vision. A model of the neural circuitry of vision is provided. Similar treatment is given to mathematical modeling of spatial vision. Also, some attention is paid to lower level biological details and to higher level functional attributes of the system. Research methodologies are discussed, as are the connections between the various levels of investigation. ;The concluding chapter begins with a theoretical and methodological comparison of experimental work cited as empirical foundation for various forms of conventionalism with that supporting modularity. The questions of Chapter I are then reconsidered in light of the vision science of Chapters III and IV. It is shown that current understanding of vision elucidates many of the problems of pictorial representation. Especially relevant is the observation that human spatial vision functions by abstracting certain features from the environment, features that are preserved in certain sorts of pictures. It turns out that many of the conventionalist claims about mind, vision and pictorial representation are unsupportable, given current understanding of mind and vision.