Table 1.

General description of the facial gestures.

Facial Gesture	Face Region
	Eyebrows	Eyes	Mouth
Neutral face	No movement	No movement	No movement
Eyebrow elevation	Inner brow raiser (AU1) and outer brow raiser (AU2)	Irrelevant	Irrelevant
Eye closure	Irrelevant	Eyes closed (AU43)	Not important
Wide-open smile	Irrelevant	Irrelevant	Lip corner puller (AU12), lips part (AU25) and jaw drop (AU26)
Closed mouth smile	Irrelevant	Irrelevant	Lip corner puller (AU12) and lip stretcher (AU20)
Pucker	Irrelevant	Irrelevant	Lip puckerer (AU18)