The following post is about AU1 – inner brow raiser, driven by the medial part of the frontalis muscle. It covers: anatomiczny odmiana, Powszechny błędyi zapewnia Czysty Referencje. 

 

Co to jest Inner Brow Raiser?

Wewnętrzny raiser brwi, lub AU1, jest System kodowania działań na twarzy (FACS) action unit (AU). Its function is to raise the medial brow/forehead area, and its action is triggered by the contraction of the medial region of frontalis. It can difficult find clean references wewnętrzne uniesienie brwi. When building FACS references, many sources fail to:

1. Find actors who can voluntarily trigger their medial frontalis without also contracting the lateral area of frontalis or corrugator supercilii. 
2. Właściwe kierowanie modelami to perform medial frontalis contraction.

In our everyday lives, most of us can effortlessly raise our inner brows without thinking twice; however, when commanded to, many people struggle to isolate this motion.

Referencje FACS i błędne informacje

I recently (2020) critiqued a set of FACS shapes for a client and noticed his wewnętrzny podbieracz brwi kształt miał trochę falistej tektury (od brwiowy lżejszy) omyłkowo wmieszane.

Client’s Inner Brow Blendshape + My Notes:

Dodanie falistej tektury do wewnętrzny podbieracz brwi jest bardzo częstym błędem. Ta wspólność wynika częściowo z faktu, że: Dobre referencje są trudne do znalezienia!

Even my client – an established industry artist with a great portfolio and CV – unknowingly added corrugator features to his model, because he trusted a tainted reference. The reference he used was from a prominent anatomy and facial expression book: Anatomia wyrazu twarzy. Many art students and professionals use this textbook. It is a great textbook, but some of its FACS shapes are inaccurate.

Reference used by client:

See the vertical and wavy lines in the center of the forehead in the images below? Those vertical lines are from a brow knitting muscle known corrugator supercilii.

To view some clean examples of medial brow raising, observe the GIFs below. Read about the primary and secondary effects of wewnętrzny podbieracz brwi a także jak jego cechy mogą się różnić w zależności od osoby.

Przykłady Clean AU1 - Inner Brow Raiser

example i

example ii 

For more information Zobacz: The Secret Life of Inner Brow Raiser.

For a full and structured FACS deep dive, see my online course, the: FACS Cram Session.