See The World Through The Eyes Of A Cat

Stereo Vision in the Brain

Imagine a cat sees a mouse on the ground ahead of it. The image of the mouse is projected into both eyes, and lands on the two retinas. A neuron in each eye captures light from, say, the top of the mouse’s head. The two neurons then need to deliver this information to brain maps of the visual scene so that the two images can be compared for small differences. This happens in the visual cortex, at the back of the head, which receives information from the two eyes.