We even make microexpressions, where our faces change for a fraction of a second, usually as a reaction to something. They are constantly changing, often at high speed. Of course, our face movements are complex. Every movement in particular face muscles results in a change in the FACS codes used, and in turn a difference in the face appearance. The most recent revision of the system occurred in 2002.įACS is a system used to codify movements in face muscles. FACS was developed by Swedish anatomist Carl-Herman Hjortsjo in the late 1960s and was later popularised by Paul Ekman and Joseph C Hager as they developed their Emotion Analysis theories in the late 1970s. One system that analyses the complex movements of the face is the Facial Action Coding System (FACS). They have tried to map our faces in some clear-cut, defined way. Scientists have tried to look at the concept of facial recognition, facial movement and indeed emotion-depiction, from a clinical, logical perspective. Assuming that your FFA is fully functioning, you will still recognize those faces as belonging to the same person - you if you're still staring in the mirror! The face you see in the mirror smiling back at you looks different from the face frowning at you, from the face gurning to make a point. Of course, as faces move they look different. People who have damaged their FFA have struggled to recognize even close family members. There is one part of our brain, known as the fusiform face area (FFA) that enables us to recognize faces. It goes on to add, "the face is crucial for human identity, and damage such as scarring or developmental deformities have effects stretching beyond those of solely physical inconvenience".Įvery face is different in some way - even identical twins have some distinguishing features.Įvery unborn child that is yet to come will have a face that is different from every person who has been! That is a mind-boggling number of different faces that have been and will be created! To quote Wikipedia, "the face is a central organ of sense and is also central in the expression of emotion among humans". Our face is the most complex and individualized part of our body. You can automatically tell whether someone is smiling or frowning (or indeed if they are showing many other emotions) simply by looking at their face. How has the face in the mirror changed now? What looks different from when you were smiling? How is it different from you were just standing with a neutral expression?Īs a person, the expressions we see on a face are intuitive to us. Physically, how has that face in the mirror changed? Stand in front of a mirror, and look closely at your face.
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