Caption:
Three-dimensional visualisation of the visual pathway based on scanned human data. Electrical nerve impulses travel from the eyes to the occipital lobe in the back of the brain via millions of nerves that make up the visual pathway. The white matter of the brain is made up of millions of nerve extensions (axons) which connect nerve fibers to other nerve fibers, target tissues or organs. In this image, bundles of axons in the white matter (coloured blue and red) are seen radiating from the eyes to the visual centers of the brain.