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Human Body & Health

Why does spatial resolution worsen at the periphery of human vision?

A)Retinal disparity increases linearly outward
B)Photoreceptor density remains constant overall
C)Ganglion cell receptive fields converge
D)Cortical magnification factors are uniform

💡 Explanation

Spatial resolution decreases peripherally because more photoreceptors converge onto single ganglion cells in the retinal periphery, thus increasing the receptive field size. Therefore, fewer details are resolved, rather than because of receptor density or cortical magnification.

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