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Do we need to know what peoples emotions are in the classroom? This new face decoding system can tell your emotions by your facial movements. This new technology says that Mona Lisa is 83 percent happy, 9 percent disgusted, 6 percent fearful, and 2 percent angry.

The process starts when the computer constructs a 3-D computer model of the face. All 44 major muscles in the model must move like human muscles. An action movement is the movement of one or more muscles. Dr. Paul Eckman, the creator of Facial Action Coding System. Eckman has classified six basic emotions. These emotions include happiness, surprise, anger, disgust, fear, and sadness. Each emotion is associated with characteristic movements of the facial muscles. When you're surprised your frontalis pars lateralis muscle raises your eyebrows. When you're angry your orbicularis oris tightens your lips.

The facial expressions for each emotions are universal. Even though individuals often show varying degrees of expression, like not smiling. Using video imagery, the new emotion-recognition software tracks these facial movements in a real face or a painting. Each a expression is compared against a neutral face, showing no emotion. Humans perform the same calculations everyday. Dr. Huang a creator of Facial Action Coding System says his new computer software stores similar anatomical information as electronic code.

With this new software if you smile when a Web ad appears another ad similar will follow. If you frown a different ad will appear. Dr. Huang predicts that a classroom computer could recognize when a student is becoming confused or bored. Then the computer can modify the lesson like an effective human instructor. Most human communication is nonverbal including emotional communication.

This new face decoding system can tell your emotions by your facial movements. Although to an expert faces don't lie, these muscle clues are sometimes used to spot when a smiling politician or celebrity isn't being truthful. Moving your facial muscles not only expresses emotion, but also may help produce them.

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