Image 1 shows a normal (left) and an inverted face image (the eyes and nose were tampered with) (right). Unless the image is turned over, it is difficult to realize the peculiarity of the "thacherized ...

When you see a familiar face upright, you'll recognize it right away. But if you saw that same face upside down, it's much harder to place. Now researchers who've studied Claudio, a 42-year-old man ...