5. The primary visual cortex (striate cortex or V1) is located in the occipital lobe. It contains simple cortical cells and complex cortical cells that participate in the encoding of shape and movement. Information about movement and the location of objects is processed further by the dorsal stream, while Summary Table 6.2: Anatomical Features of the Visual System Feature Significance Cornea Bends light toward the retina Anterior chamber Contains fluid for nourishing the cornea and lens Iris Muscle that controls the amount of light entering the eye Pupil Opening in the iris Lens Focuses light onto the retina Vitreous chamber Fluid-filled chamber behind the lens Retina Contains photoreceptors and initial processing neurons Macula Responsible for central, as opposed to peripheral, vision Fovea Pit in the macula specialized for detailed vision Optic nerves Axons from retinal ganglion cells that exit the eye Lateral geniculate nucleus (LGN) Area of the thalamus that receives input from the optic nerves Primary visual cortex (V1) Receives input from the lateral geniculate nucleus; responsible for initial processing of an image Dorsal stream Analysis of movement and location of objects; “where” pathway Ventral stream Object recognition; “what” pathway information about object recognition is processed further by the ventral stream. (LO3)