ABSTRACT
Cortical levels of visual processing were thought to start with striate cortex and sensation, and relay through two basic and higher levels related to perception in areas. This basic outlook was expanded to include subsequent processing in multi modal association cortex, and has served as a framework for modern concepts of cortical organization. Modern concepts of information processing in visual cortex stem from three basic and highly significant advances. Visual cortex contains many subdivisions and includes not only cortex in the occipital lobe but cortex in the temporal and parietal lobes as well. Extrastriate visual cortex in the occipital lobe was in turn found to project to inferior temporal cortex, posterior parietal cortex, and a part of frontal cortex related to eye movements. Finally, inferior temporal cortex and parts of posterior parietal cortex were found to have connections with the frontal eye field and prefrontal cortex.
