chapter  3
Visual Pathways in the Brain
Pages 32

The neural circuitry of the retina transforms a fluctuating pattern of light into a pattern of neural activity in retinal ganglion cells, which is then transmitted along the optic nerve to the brain. There, many further operations take place on it, with the eventual result that the actions of the animal are controlled appropriately. In this chapter we will outline the advances that have been made in understanding the initial operations that occur on visual input to the brain. We will begin with a short general description of the pathways from eye to brain in vertebrates, and then go on to consider the visual pathway of primates in more detail.