H&F: I’ve heard of what neuroscientists call the Jennifer Aniston neuron [in studies, one neuron lit up only when stimuli involved the actress]. Is there one neuron that’s remembering someone’s nose and one that’s remembering someone’s mouth? How detailed does the encoding get?

Source: http://www.hopesandfears.com/hopes/future/science/216395-how-does-your-brain-remember-a-face