Cortical area 17 also known as the primary visual cortex of the brain shown for both human and monkey. (Figure by MIT OpenCourseWare. After figure 10.12 in: Bear, Mark F., Barry W. Connors, and Michael A. Paradiso. Neuroscience: Exploring the Brain. 2nd ed. Baltimore, MD: Lippincott Williams & Wilkins, 2001. ISBN: 9780683305968.)