## FACS 2.0

An improved, automated facial action coding system (FACS): measure 26 facial action units (AUs) and 29 other features with even less bias than traditional FACS. Use this map to explore the outputs of our FACS 2.0 model.

### Modality

Image

### Emotions Detected

Action Units (AU1-AU46) tracking individual facial muscle movements for detailed expression analysis

### Relevant Publications

- [Facial movements have over twenty dimensions of perceived meaning](https://psyarxiv.com/hc93t/)
- [What the face displays: Mapping 28 emotions conveyed by naturalistic expression](https://psycnet.apa.org/record/2019-32629-001)
- [Emotional expression: Advances in basic emotion theory](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6687086/)

### Action Units

- AU1 Inner Brow Raise  
- AU4 Brow Lowerer  
- AU5 Upper Lid Raise  
- AU6 Cheek Raise  
- AU7 Lids Tight  
- AU9 Nose Wrinkle  
- AU10 Upper Lip Raiser  
- AU12 Lip Corner Puller  
- AU17 Chin Raiser  
- AU19 Tongue Show  
- AU27 Mouth Stretch  
- AU32 Bite  
- AU37 Lip Wipe  
- AU43 Eye Closure  
- AU53 Head Up  
- AU54 Head Down

### Emotions

- Hand over Mouth  
- Hand over Forehead  
- Cry  
- Gasp  
- Jaw drop  
- Laugh  
- Licking lip  
- Smile  
- Tense  
- Wide-eyed

### Data breakdown

Reaction #  
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