Chapter 10 =- pages 235-254 depth: moion-based. The neuron does not ire to the right or lat slaning but does to the let- pictorial depth neuron responds to it and to depth indicated by disparity. Binocular depth cells or disparity selecive cells striate cortex respond to absolute. Important for close tasks like going down the stairs, threading needle. 30% more accurate when we have both eyes versus one. Based on let and right eyes having diferent perspecives. Mach (painter) interested in depth percepion did a perspecive from perspecive of his let eye. Let and right do not see the world the same way. Rely on comparing on the let and right image to view the world. When it is close (thumb) jumps further; jumps back and forth as you look at your thumb with only right eye or with only let eye.