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Fig. 5.16. Self-organized ocular dominance map. Light areas in (a) indicate neurons that prefer the left eye, dark areas those that prefer the right eye, and medium gray indicates no net preference. The histogram (b) shows how these preferences are distributed, with left monocular neurons at the top, binocular neurons in the middle, and right monocular neurons at the bottom. Most neurons are binocular, slightly preferring one eye or another, as they do in animals (Figure 2.5). Plot (c) illustrates how selective the neurons are for ocularity, with light areas indicating monocular neurons and dark areas those that are binocular. Less selective regions fall between ocular dominance stripes, as in animal maps.