http://www.theguardian.com/science/2014/...-blindness
EXCERPT: [....] Specific areas of the brain process facial information. Damage to those areas gives rise to prosopagnosia or “face blindness”: an inability or difficulty with recognising faces. While brain damage-induced prosopagnosia is rare, prosopagnosia itself is not. Studies suggest around 2% of the population could have some form of prosopagnosia. These “developmental” prosopagnosics seem to be born without the ability to recognise faces and don’t acquire it, relying instead on all manner of cues, from gait to hairstyles, to tell people apart.....
EXCERPT: [....] Specific areas of the brain process facial information. Damage to those areas gives rise to prosopagnosia or “face blindness”: an inability or difficulty with recognising faces. While brain damage-induced prosopagnosia is rare, prosopagnosia itself is not. Studies suggest around 2% of the population could have some form of prosopagnosia. These “developmental” prosopagnosics seem to be born without the ability to recognise faces and don’t acquire it, relying instead on all manner of cues, from gait to hairstyles, to tell people apart.....