Facial action coding system software

There is broad interest in the application of FACS for assessing consumer expressions as an indication of emotions to consumer product-stimuli. However, the translation of FACS to characterization of emotions is elusive in the literature. The aim of this systematic review is to give an overview of how FACS has been used to investigate human emotional behavior to consumer product-based stimuli. The search was limited to studies published in English after , conducted on humans, using FACS or its action units to investigate affect, where emotional response is elicited by consumer product-based stimuli evoking at least one of the five senses. The search resulted in an initial total of 1, records, of which 55 studies were extracted and categorized based on the outcomes of interest including i method of FACS implementation; ii purpose of study; iii consumer product-based stimuli used; and iv measures of affect validation. This review illuminated some inconsistencies in how FACS is carried out as well as how emotional response is inferred from facial muscle activation.

Many researchers code muscle movements to learn more about how and why the face moves. They use the Facial Action Coding System which provides them with a technique for the reliable coding and analysis of facial movements and expressions. They indicate which AUs moved to produce the changes observed in the face. This makes FACS coding quite objective. In scoring, it will be necessary to apply slow motion and frame-by-frame viewing to identify the AUs that occur, always alternating with real time viewing. As such, FACS coding is very time intensive. When an action is active, its intensity is displayed in 5 categories.

The Facial Action Coding System developed by Ekman and Friesen is an anatomically based for measuring all visually discernible facial movement, described on the basis of 44 Action Units AU's as well as several head and eye positions and movements. An AU has a fairly arbitrarily assigned numeric code and can consist of one or more muscle groups. The coding procedure also allows for the coding of the intensity of the facial action on a five point intensity scale, for the timing of facial action and for the coding of facial expressions in terms of events one or more AU's composing the facial expression.

There is broad interest in the application of FACS for assessing consumer expressions as an indication of emotions to consumer product-stimuli. However, the translation of FACS to characterization of emotions is elusive in the literature. The aim of this systematic review is to give an overview of how FACS has been used to investigate human emotional behavior to consumer product-based stimuli. The search was limited to studies published in English after , conducted on humans, using FACS or its action units to investigate affect, where emotional response is elicited by consumer product-based stimuli evoking at least one of the five senses.