An image of rod and cone photoreceptors in the primate retina is divided into several interlocking pieces. As reported in this issue of PLoS Biology (see Gauthier et al., e1000063), retinal ganglion cells perform a similar division of the visual scene represented by the photoreceptors. Each ganglion cell samples from an irregularly shaped region of space. These regions interlock like puzzle pieces to represent completely the images we see.
Image Credit: Jeffrey Gauthier (Salk Institute for Biological Studies).
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