PHGY 209 Lecture Notes - Lecture 6: Visual Cortex, Optic Chiasm, Visual Field
Document Summary
Genetic defect in the opsins: one of the opsins is not functioning: you may have just two types of cones or maybe just one, which limits the range of colours we can perceive. We will now look at some of the pathways that go from the retina to the brain. This is the brain turned upside down. Right and left visual field: opposite, because the subject has been turned over. Each eye sees the entire visual field, but we can split each visual field into green, on one side, and blue, on the other side. The blues are on the same side, on the right visual field, the green, on the left visual field. Because the optics of the eyes functions like a camera, the image is inverted when it is projected on the retina in the back. Now the blue right visual field is on the left, and the green visual field is also on the side.
