Explain how visual stimuli is relayed to the brain and how it is processed there.

Visual stimuli are relayed through light entering the eye. The iris, the colored muscle in your eye, contracts and expands in order to let light into the retina. There are red, green, and blue color receptors in the eye that send light to the optic nerve. The left and right optic nerves cross over forming the optic chiasm which sends the information to the thalamus. The thalamus receives the information from the optic nerve and relays it to the visual cortex in the occipital lobe where it is processed. Associations occur and sense is made out of the stimuli.

The brain’s response to visual stimuli helps you focus on what you should see rather than all there is to see

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