Interesting word here.

Oxford researchers found that a baby's face can seize our attention in milliseconds, activating the fusiform gyrus that responds to human faces.

Many scientists, in fact, remain convinced that the brain's intimate knowledge of faces is a byproduct of its ability to capture the visual essence of any object. "You can show that parts of the brain most selective for faces are also responsive to cars in a car expert and birds in a bird expert."

On average, the brain takes only 200 milliseconds to tell one face from another,. When that neural ability falters, as in autism, we can find friendly faces threatening. In a rare disorder called prosopagnosia, we can't recognize faces at all.
– Wall Street Journal, April 4, 2008

For those intersted in more reading, the article recommends:
Oxford researchers testing our attraction to baby faces.
among primates, the brain's face recognition area is made up of neurons that only react to faces.
ability to discriminate faces can develop even if we never see a face while growing up.
The Face: why people developed characteristic facial features and certain features more appealing.
a four-hour BBC series explores the evolution of facial features, the face's role in sexuality, communication through facial expressions, and its part in defining identity.

I believe that was the condition of the person who lent his condition to Oliver Sacks's's's first book, The Man Who Mistook His Wife For A Hat.

It is an interesting concept. If you recall, you also brought it up here.