Facs analysis1/3/2024 ![]() Several platelet function tests have been developed for use in the clinic and in experimental animal models. Inefficient platelet production and/or defective platelet function results in bleeding disorders resulting from a wide range of genetic traits and acquired pathologies. I hope this explanation of action units and FACS has been helpful, and informative.The main function of platelets is to maintain normal hemostasis. There are five emotions displayed in the image below, however iMotions provides a measure of the seven central emotions (shown in the table above), alongside, and in conjunction with measurements of action units. If we zoom in, we can see the intensity of the displayed emotion. Facial Expression data displayed while participant watches advertisement in iMotions The screenshot below shows how the facial expression data is displayed while a participant watches an advertisement. With this information combined, it’s possible to start drawing conclusions about how strongly an individual felt, and what those emotions consisted of, in response to a set stimulus. These measurements can also be synchronized with recordings of galvanic skin response, which provides a measure of arousal. The FACS is also graded on a scale of intensity, which gives a measure of how strongly the emotion is displayed. When measuring facial expressions within iMotions, the stimuli are paired automatically to the FACS analysis, allowing you to pinpoint the exact moment that the stimulus triggered a certain emotion. Nose Wrinkler, Lip Corner Depressor, Lower Lip Depressor Inner Brow Raiser, Outer Brow Raiser, Brow Lowerer, Upper Lid Raiser, Lid Tightener, Lip Stretcher, Jaw Dropīrow Lowerer, Upper Lid Raiser, Lid Tightener, Lip Tightener Inner Brow Raiser, Outer Brow Raiser, Upper Lid Raiser, Jaw Drop Inner Brow Raiser, Brow Lowerer, Lip Corner Depressor The gifs on the right are shown in the same order that the action units listed. A complete list of these combinations and the emotion that they relate to is shown below. Emotion recognition is completed in iMotions using Affectiva, which uses the collection of certain action units to provide information about which emotion is being displayed. For example, happiness is calculated from the combination of action unit 6 (cheek raiser) and 12 (lip corner puller). Certain combined movements of these facial muscles pertain to a displayed emotion. The Action Units described above show the different movements of facial muscles. Sign up now Eye Movement Action Units Action Unit Levator palpebrae superioris Orbicularis oculi, pars palpebralis Relaxation of Levator Palpebrae and Contraction of Orbicularis Oculi, Pars Palpebralis. Relaxation of Levator Palpebrae Superioris Masetter Temporal and Internal Pterygoid relaxed Incisivii labii superioris and Incisivii labii inferiorisĭepressor Labii, Relaxation of Mentalis (AU17), Orbicularis Oris Levator Labii Superioris, Caput infraorbitalis ![]() Outer Brow Raiser (unilateral, right side)ĭepressor Glabellae, Depressor Supercilli, Currugator
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