Prosopagnosia is a visual agnosia characterized by an inability to recognize
previously known human faces and to learn new faces. The aim of this study was
to present a forty-six year-old woman with congenital prosopagnosia, and to
discuss the neural bases of perception and recognition of faces. The patients
had a lifetime impairment in recognizing faces of family members, close friends,
and even her own face in photos. She also had impairment in recognizing animals
such as discriminating between cats and dogs. The patient’s basic visual skills
showed impairment in identifying and recognizing the animal form perception on
the coding subtest of the WAIS-R, recognizing overlapping pictures (Luria), and
in identifying silhouettes depicting animals and objects (VOSP). Unconventional
tests using pictures evidenced impairment in her capacity to identify famous
faces, facial emotions and animals. Her face perception abilities were
preserved, but recognition could not take place. Therefore, it appears that the
agnosia in this case best fits the group of categories termed “associative”.