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How do the expressions of blind people differ from the sighted? Learn more about blind facial expressions from HowStuffWorks.

Of the most powerful ways that humans communicate emotion is through the face so it's everything from enjoyment surprise curiosity empathy and. basically our face has all these different building blocks these action units that map into different facial expressions so for example that corner pole is action unit twelve and it's essentially one of the main components of a smile the brow pharo it's action it for it's this corrugated or muscle and it's you know it creates all these wrinkles here that communicates things like confusion or dislike. and so what we've done is we've used computer vision...