![]() ![]() Yet visual processing is subserved by two major visual pathways (magnocellular and parvocellular) that operate with a degree of independence in early visual processing and encode contrasting visual information. This model stipulates that the magnitude of perceptual processing enhancement is inversely related to the size of the attended region, such that a narrow attended-region facilitates greater perceptual enhancement than a wider region. The prevailing model of attended-region size across cognition, perception, and neuroscience is the zoom-lens model. We were interested in understanding the effect of the size of the attended area on visual perception. Visual spatial attention is a critically important selection mechanism that prevents these volumes from overwhelming our visual system’s limited-capacity processing resources. There are volumes of information available to process in visual scenes.
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