A weekly deep dive into the hidden architecture of your mind. The Lateral Geniculate Nucleus: How Your Brain Sees Before You Do Where It Lives The lateral geniculate nucleus (LGN) sits inside the dorsal thalamus. There is one LGN in each hemisphere. Each LGN receives visual information from the opposite half of visual space. What It Does The LGN receives visual signals from the retina, sorts them into parallel information streams, and sends the organized output to the primary