Decoding facial expressions

In childrearing situations, these expressions are often related to the status of infants, and the ability of females to rapidly detect them helps to maintain infant health and produce prosocial outcomes. Scans showed that when people were viewing the images, there was marked activity in a brain region called the posterior superior temporal sulcus pSTS. Twenty-three actors posed the six 'fundamental' emotions of happiness, surprise, fear, disgust, anger, sadness and a neutral expression. Robotics and the professions. Behavioral and Brain Evidence. This information is then rapidly processed i. The Facial Action Coding System FACS details the anatomical basis of facial movement to describe how facial signals are exhibited based on the muscles that produce them.
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Transmitting and decoding facial expressions.

The researchers were able to determine the exact region of the brain that works out the expression a person is conveying with their facial muscles Credit: Taken together, our findings suggest that differences in the evolutionary roles or traits of females and males may have led to the development of sex differences in the psychological processes underpinning the rapid detection of emotional facial expressions. Full details of the Ohio State research are published online in the Journal of Neuroscience. Despite some studies reporting no effect of emotion, due to its robust sensitivity to faces, the N remains a good measure of early facial expression discrimination. This raises a number of questions about the relationship between this information and behavior. The sensitivity to combinations of spatial frequency bands just revealed reflects a mechanism that processes information over the face.
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Embodied Simulation in Decoding Facial Expression - Oxford Scholarship

However, whenever we smile or frown, or express any number of emotions using our faces, we move a large number of muscles in a complex manner. Female observers gave higher ratings to smiles and lower ratings to neutral expressions than men did. Psychological Science 16 , pp. Taken together, our findings suggest that differences in the evolutionary roles or traits of females and males may have led to the development of sex differences in the psychological processes underpinning the rapid detection of emotional facial expressions. This thesis project draws on Ekman's theory of the six basic emotions and delves deeper into the understanding of how emotions are represented in facial expressions.
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She said that she thought she was stoic and gave nothing away. Check if you have access through your login credentials or your institution. The increase of noise level with time averaged across all 7 expressions reveals that the representations constructed in the brain are sufficient for behavior and become more robust with time. These facial signals impinge on the retina where banks of spatial filters analyze their light-dark transitions at different scales and orientations. Schyns PG Diagnostic recognition: We have reviewed the evidence that muscle groups in the face produce lowly correlated signals about the affective state of the transmitter. Attention to spatial frequency information is under top-down cognitive control to extract the combination of spatial frequency information identifying each expression.
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