Cover legend: To achieve binocular vision, information from each eye must be combined in the human brain. Inputs serving each eye are dovetailed together to form a pattern within the primary visual cortex. By unfolding the surface of occipital lobes, Adams et al. have revealed the complete layout of human ocular dominance columns. Patterns from unfolded left and right primary visual cortices of one subject are illustrated (insets at the bottom). The red and blue columns represent the right eye and left eye, respectively. Even the blind spots generated by the optic discs in the eyes are visible within the mosaic of ocular dominance columns. By projecting the primary visual cortex back onto the visual field (shown at the top), it is possible to show the relative amount of visual space served by the columns as a function of distance from the center of gaze. The column pattern shrinks toward the fovea and expands in the periphery. For more information, see the article by Adams et al. in this issue (pages 10391–10403).