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humans often use facial expressions to communicate social messages. However, observational studies report that people experiencing pain or orgasm produce facial expressions that are indistinguishable, which questions their role as an effective tool for communication. Here, we investigate this counterintuitive finding using a new data-driven approach to model the mental representations of. The face droops downward, but not accentuating specific areas. Sadness indicates defeat, like giving up or not attempting to engage with others. This is perhaps the most universal expression that is interpreted with the same meaning across various cultures. Facial expressions can explain a lot about whats going on in ones mind. As humans, we are able to express our emotions through our words as well as actions. Our body language sometimes becomes a dead giveaway to the real emotions we are going through in our mind. Our eyes, the slight tremor of our lips, the crumpling nose, etc. This study focuses on 3 selected infants showing extreme facial expression intensity to a common pain stimulus. , the pfp), describe its progression and timing, and search for patterns, if any, along the pain display. If pain facial expression is universal with common features across. Facial expression is a cornerstone of both observational and self-report measurement of pediatric pain 14. Table 1 lists commonly published pain scales that incorporate facial expression in their usage the list, though not exhaustive, clearly illustrates the widely accepted use of facial expression as the currency in the communication and clinical evaluation of pain in. anger is characterized by a facial expression that causes someone to lower their brows, press their lips together firmly, and bulge their eyes. Fear is an emotion that is often associated with a threatening or dangerous stimuli. Extreme learning machine ensemble using bagging for facial expression recognition 444 interaction, the system should perform all of these operations accurately and in real time. Jason matthew harley, in emotions, technology, design, and learning, 2016. Facial expressions are configurations of different micromotor (small muscle) movements in the face that are used to infer a persons discrete emotional state (e. Ekman and friesens facial action coding system (facs) was the first widely used and empirically validated. the facial expression itself, tense and strained, is made to parallel the strain the person is feeling internally. The facial expression of fear is characterized by widened eyes and eyebrows slanted upward. Fear, like surprise, is closely rooted to instinct and indicates a desire to. Facial expression recognition is the last stage of afea systems. An extreme example of variability in expressiveness occurs in individuals who have incurred damage either to the facial nerve or central nervous system 63, 85.