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• n  inability to recognize objects by use of the senses

• The new study showed that prosopagnosia (from the Greek prosopon for face and agnosia for ignorance) is highly heritable and surprisingly common, afflicting, in some form, about 1 .
• Where most clinicians study at arm's length a case of amnesia, say, or autism or agnosia (inability to recognize a word or a shape), the British-born physician tries to see through .
• The Lost Faces tells what it is like to go through life with visual agnosia.