2What is prosopagnosia? Also known as face-blindness. Sufferers cannot recognise faces, even of familiar people.The problem is specific to faces. There is no general memory problem.Faces are not recognised even with multiple cues.
3Types of prosopagnosia Acquired prosopagnosia results from brain damageDevelopmental prosopagnosia may be genetic or environmental in originEvidence comes from case studies, for example of stroke victimsEvidence comes from twin studies
4Structural abnormality in developmental prosopagnosia The patient DP has a small temporal lobe.Other patients have more specifically a small fusiform area, part of the temporal lobe.
5Why can’t faces be recognised? People with prosopagnosia can see all the parts of faces, such as mouths and eyes.The problem is in configural processing, putting the parts together to make a recognisable face.
6How might developmental prosopagnosia develop? Some cases of developmental prosopagnosia seem to be related to childhood sight problems.Early correction of these would probably prevent some cases of prosopagnosia
7A spectrum of face recognition? One approach to developmental prosopagnosia is to think of all of us on a spectrum, ranging from prosopagnosic patients to ‘super-recognisers’, who show exceptional face recognition.