Explain why retinal convergence increases the sensitivity of the eye.

Explain why retinal convergence increases the sensitivity of the eye.

Several rod cells make synaptic, connections with a single neuron, and then connected to the brain via a single optic nerve.

When a small stimulus which would not cause stimulate of rod cell fall on the rod cells depolarization are produced in each rod cell and summate an action potential on the bipolar cell. The action potential is eventually registered by the brain. Thus, the rods show sensitivity to light.

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