Lecture 5, october 18. 2010 chapters 5 and 6. Motor system: resides in the frontal cortex. The nasal part of the retina (inside half) cross sides as they go to the optic chiasm: the left goes to the right and the right goes to the left. Drawing) @20:10: everything in the left visual field goes to the right side of the brain. 1: what you see when you look out, if your eyes are focused on him is the visual field. Everything to the right of him is the right visual half-field. Everything to the left of him is the left visual half-field. Visual field= what the person sees, and then what goes into the brain is different: slide : the right hand side is the map of the visual field not what is dead in the retina. If the sides on the right side were of the retina, then they will be the total opposite.