Distribution of neurons in the pigmented rabbit's visual cortex

Past observations revealed a relationship between mammalian retinal ganglion cell distribution and cortical and subcortical projection of the rabbit's visual field. High ganglion cell density sectors of the retina claimed larger areas in their cortical and subcortical projections (with a high magnification factor) than retinal areas with low ganglion cell density. In this study, it was observed that distribution of nonpyramidal neurons in laminae IV and VI of the pigmented rabbit's visual cortex was not uniform. The nonuniformity in layer IV roughly followed the variation in the magnification factor in the cortical projection of the animal's visual field. The highest density of nonpyramidal neurons in layer IV was observed in the cortical area with the highest magnification factor.