Referencias fotográficas FACS (Facial Action Coding System)

collage of Facial Action Coding System action units and AU labels

FACS Photo References is an image library of action units (AUs) and action descriptors (ADs) from the Facial Action Coding System (FACS). All references are performed by the autor, who is FACS-certified with 14 years of experience in facial muscle isolation.

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Postura neutral

Unidad de Acción FACS

FACS AU1 - inner brow raiser: neutral vs. frontalis medialis contraction. Expert reference by Melinda Ozel.
AU1 - inner brow raiser is activated by medial frontalis contraction. Note the raise in the central forehead area. Contrary to many literature assertions, inner brow raiser does not need to be perfectly lifted at the innermost brow tips. It often occurs slightly lateral to the brow start.
FACS AU2 - outer brow raiser: neutral vs. frontalis lateralis contraction. Expert reference by Melinda Ozel.
AU2 - outer brow raiser is activated by lateral frontalis contraction. Note that the peak of the raise typically occurs at the arch of the brows, causing the resulting brow shape to appear more angular than a full frontal belly contraction.
FACS AU4 - brow lowerer: neutral vs. mostly corrugator supercilii contraction (in this specific example). Expert reference by Melinda Ozel.
AU4 - brow lowerer is activated by any combination of the following brow lowering muscles: corrugator supercilii, depressor supercilii, and/or procerus. For isolated GIFs of corrugator supercilii and depressor supercilii, click on the image above to view the Facial Muscle Anatomy Function Guide.
FACS AU5 - upper lid raiser: neutral vs. levator palpebrae superioris contraction. Expert reference by Melinda Ozel.
AU5 - upper lid raiser is activated by the contraction of the levator palpebrae superioris muscle and depending on nervous system state, Müller’s (superior tarsal) muscle as well. Note the increased sclera visibility and the decreased distance between the upper eyelid and lower eyebrow border.
AU6 - recaudación de mejillas - Melinda Ozel - Face the FACS
AU7 - tensor de párpados - Melinda Ozel - Face the FACS - blendshape - blendshapes - blend shape - blend shapes - FACS - Facial Action Coding System
AU8 - labios uno hacia el otro - boca aulladora - blendshape - blendshapes - forma de mezcla - formas de mezcla - FACS - Facial Action Coding System (Sistema de codificación de acciones faciales)

NOTA: He eliminado temporalmente "Boca de aullador". Determinar la mejor manera de dividirlo que no es redundante a formas como "apretador de labios vertical".

nose wrinkler example with neutral pose and nose scrunch pose
AU10 - elevador del labio superior - levator labii superioris - caput infraorbitalis - expresiones de disgusto - - Melinda Ozel - Face the FACS
AU11 - profundizador del surco nasogeniano - músculo cigomático menor - - blendshape - blendshapes - blend shape - blend shapes - FACS - Facial Action Coding System (Sistema de codificación de acciones faciales)
AU12 - extractor de comisura labial - cigomático mayor
AU13 - tirador del labio agudo - levator anguli oris
AU14 -dimplificador- buccinador
FACS AU14 - dimpler: neutral vs. posterior buccinator contraction. Expert reference by Melinda Ozel.

NOTA: He acuñado dos diferenciaciones de la acción dimpler: regulador del eje y y regulador del eje z. I have done so because the existing FACS facial actions do not effectively encompass the depth of expression possible to achieve from the buccinator muscle (the muscle driving AU14).

Hay dos tipos de dimplers que he observado:

1) regulador del eje y – involving outer portions of the lip corners compressing against each other in a vertical plane (superior and inferior buccinator)
2) regulador del eje z – involving the inner mouth portions of the lip corners pushing against the teeth and inner cheeks (posterior buccinator)

AU15 - depresor de la comisura labial -depressor anguli oris
AU16 - depresor del labio inferior
AU16 - depresor del labio inferior
AU17 - mentonera - mentalis
AU18 - fruncimiento del labio - músculos incisivus labii superioris e incisivus labii inferioris - Sistema de Codificación de Acciones Faciales

AD19 - Espectáculo de la lengua

AD19 - muestra de lengua - FACS - Facial Action Coding System (Sistema de codificación de acciones faciales)

AD = descriptor de acción

AU20 - estirador labial - risorius - Facial Action Coding System - FACS - blendshape - blendshapes - forma de mezcla - formas de mezcla
AU21 - tensor de cuello - Facial Action Coding System - FACS - blendshape - blendshapes - blend shape - blend shapes
AU22 - embudo labial - FACS
mujer que realiza la expresión del estiramiento labial basado en FACS
AU23 - tensor labial vertical - orbicularis oris

NOTA: Vertical lip tightener (which I also refer to as “lip cincher”) is not an official FACS shape. I have coined this action in order to further break down the functional movements of orbicularis oris. Más información. These refinements of orbicularis oris actions are critical to applications like lipsync and nuanced expression detailing.

AU24 - presionador labial - orbicularis oris
AU24 - lip presser involves the pressing of the upper and lower lip against one another from the contraction of the marginal part of orbicularis oris. AU24 may also be referred to as "lip pressOr" depending on which Ekman inconsistency you prefer to follow. In the latest 2002 Manual FACS, AU24 is consistently referred to as "lip pressEr." However, in the 1978 FACS Investigator's Guide, and in Ekman's subsequent writings (e.g. in Lo que revela el rostro), it is referred to as "lip pressOr." Looks like we will have to wait until the next release of the Manual FACS to settle this urgente importa.
AU25 - labios parte - Sistema de codificación de acciones faciales
AU26 - mandíbula caída - Sistema de codificación de acciones faciales
AU27 - estiramiento de la boca - Sistema de codificación de la acción facial digástricos y pterigoideos
AU28 - labios chupar -Facial Action Coding System - FACS - unidad de acción - orbicular de la boca
AU46 - guiño - orbicularis oculi - Facial Action Coding System - FACS - blendshape - blendshapes - forma de mezcla - formas de mezcla
AU45 - parpadeo - orbicularis oculi - Facial Action Coding System - FACS - blendshape - blendshapes - forma de mezcla - formas de mezcla

Cómo citar esta página

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APA:
Ozel, M. (2020, septiembre). Referencias fotográficas FACS (Facial Action Coding System). Enfréntate a la FACS. https://melindaozel.com/facs-lite-still-fast/

BibTeX:

@misc{ozel2020facslite,
  author = {Ozel, Melinda},
  title = {FACS (Sistema de codificación de acciones faciales) Referencias fotográficas},
  year = {2020},
  mes = sep,
  howpublished = {\url{https://melindaozel.com/facs-lite-still-fast/}}
}

Referencias y lecturas recomendadas

  1. Carl-Herman Hjortsjö. (1970). El rostro humano y el lenguaje gestual. Studentlitteratur.
  2. de Sanctis Pecora, C. (2020). One21: un nuevo protocolo de inyección personalizable para el tratamiento de la frente con incobotulinumtoxinA. Dermatología clínica, estética y de investigación, Volumen 13, 127–136. https://doi.org/10.2147/ccid.s237519
  3. Ekman, P., Friesen, W. V. y Hager, J. C. (2002). Sistema de codificación de expresiones faciales. Research Nexus.
  4. Netter, F. H. (2019). Atlas de anatomía humana (7.ª ed.). Elsevier.
  5. Standring, S., y Tubbs, S. R. (2025). Anatomía de Grey. Elsevier.

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