Prompt Description

This schematic illustrates visual crowding zones across the visual field, with fixation at the display center. Concentric circles indicate increasing eccentricities (4°, 8°, 12°, and 16°). Representative crowding zones are shown at each eccentricity in the upper, lower, left, and right visual fields. Crowding zones are anisotropic, elongated radially (extending from fixation) relative to tangentially (along the arc of constant eccentricity), and depicted as radially stretched ellipses rather than circular regions. The size of crowding zones increases with eccentricity; zones at 16° are larger than those at 12°, 8°, and 4°. At matched eccentricities, crowding zones are smaller in the left and right visual fields compared to the upper and lower visual fields. This figure is conceptually similar to the schematic in Greenwood et al. (2017, PNAS).