Psychology -> Rods
Rods are used for night vision as they operate in dim light. Rod receptors are located at the sides of the retina and are used for peripheral vision. Therefore, at night time it is better to look at objects askance, so the peripheral rods can detect the objects. Cones are used for daylight vision, visual acuity and colour vision. As rods operate in minimal light conditions, they are more sensitive than cones. The central fovea vision within the retina contains only cones and is the area of greatest visual acuity. The light waves are absorbed by the rods and cones where they are transduced into neural energy and transmitted to the Primary Visual Cortex of the brain, via the optic nerve.
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