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. Author manuscript; available in PMC: 2015 Mar 31.
Published in final edited form as: Curr Biol. 2014 Mar 20;24(7):738–743. doi: 10.1016/j.cub.2014.02.009

Figure 1. Example of facial action coding.

Figure 1

Here, a facial expression of pain is coded in terms of eight component facial actions based on the Facial Action Coding System (FACS).