The effect of temporal deeay upon dynamic contour perception

It is very clear that the classical idea of the retinal mosaic as a system of insulated receptors cannot meet adequately various facts about visual acuity, brightness discrimination, and contour perception. In 1942, Marshall and Talbot(4) formulated a theory of visual activity and contour resolution in terms of the structure and the function of retinal and postretinal neural elements. On the basis of statistical concept they viewed such basic processes of acuity and contour perception being dependent upon the interrelated activity of populations of receptors and neural elements. Recently, other investigations have extended the statistical theory to other aspects of vision. For example, Osgood and Heyer(4) have applied it to the analysis of figural after-effects, Day(1) to form perception, and Osgood''' to apparent movement. The definition of dynamic contour perception is the perception of the borders of moving stimuli.