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A man with a rare brain lesion may help increase our understanding of how we process faces. To him, the right half of every face looks as if it is melting. This could suggest that each brain hemisphere typically processes one half of the face.
The man, known as A.D., noticed three years ago that the faces he saw on TV were distorted, saying that they looked as if they were melting. He then discovered that when he looked in the mirror, his own face was also affected. In each case it was …