This brain is dissected so that the optic radiations are visible. The pretty swooshes are bundles of axons that go from the (lateral geniculate nucleus of the) thalamus to the visual cortex in the occipital lobe. Interestingly, because things get all backwards and upside down in the brain, damage to the most inferior parts of the loop results in an upper quadrant loss of vision in the opposite eye.
fishprint 