Theory and model of the human global analysis of visual structure; Part II: The space-time and visual value segment

For pt.I see ibid., vol.SMC-12, no.6, p.805-17 (1982). A theory is presented that describes the human visual structure analysis as an effort aimed at segment formation and consequent segment structure identification. Segments occur and are processed at different levels of globality. Structure is latent in the photic signal, ready to be extracted and manipulated by eye behavior and retinal processing. This latent structure may be objectively studied by assessing the spatial relations between positions with the same photic signal power. Subjective segmentation is thought to occur as a result of adjustments of the hypothesized object-to-retina transfer function, spatiotemporal fixation parameters, and corticofugal control of neural processing in the ganglion layer of the retina. Experimental results support the hypotheses concerning adjustments of visuomotor programming as a function of structural changes of the stimuli.