![]() ![]() Multiple FACS codes are strung together using plus (?+?) signs. For example 1+2 represents raising the inner and outer portions of the eyebrow (i.e. ![]() raising the entire eyebrow.)įACS also includes a system to describe the intensity of each AU by affixing a letter A through E after the numeric code but before the plus sign. To continue the previous example, 1E+2E represents extreme (or maximal) raising of the inner and outer portions of the eyebrows.īesides representing facial movements, action units will also create changes in facial appearances. ![]() Download Paul Ekman Facial Action Coding System Pdf manual#įor example raising the inner portion of the eyebrows can produce horizontal wrinkles which are usually limited to the center of the forehead. ![]()
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