Prosopagnosia

Prosopagnosia (Greek: "prosopon" = "face", "agnosia" = "not knowing"), also called face blindness, is a disorder of face perception where the ability to recognize faces is impaired, while the ability to recognize other objects may be relatively intact. The term originally referred to a condition following acute brain damage, but a congenital form of the disorder has been proposed, which may be inherited by about 2.5% of the population. The specific brain area usually associated with prosopagnosia is the fusiform gyrus, which activates specifically in response to faces. Thanks to this specialization, most people recognize faces much more effectively than they do similarly complex inanimate objects. For those with prosopagnosia, the ability to recognize faces depends on the less-sensitive object recognition system.