PSYB65H3 Lecture Notes - Lecture 6: Flaccid Paralysis, Somatosensory System, Degenerative Disease
Document Summary
Function is dependent on anatomy and organization. Retinas are dived down the center of each eye. Visual world when looking straight out (visual field) divided down the center where your nose is: right visual field and left visual field, must be looking straight ahead. Part of retina for the outside portion of head is the temporal portion of the retina. Part closest to your nose is the nasal portion. Two nerves cross- optic chiasm nerves in the back of your brain come together as they head towards the brain then they pull away and that"s called the optic tract. Part of your retina nerves from the temporal portion as it continues back it comes to the optic chiasm and stays on the same side of the brain- it does not cross! The nasal portion of each retina (that half) whenever they go toward the optic chiasm they cross over and continue to the opposite side of the brain.
