All tasks were conducted using an adapted version of the matching-to-sample MTS format Parr and Heintz ; Micheletta et al. Video recordings from previous studies revealed coordinated movements in regular wave-like patterns within these huddles. This was also the expression participants most assumed was the macaque blowing a kiss. A confusion matrix was then created for each expression category where the distribution of errors for each dyad within that category was calculated. This finding is somewhat contradictory to the results found by Nahm et al. How do monkeys look at face?
The meaning of “macaque” facial expressions
The distribution of these expressions with regard to FACS coded movements is similar to the results of principal components analysis covering a detailed ethogram of visual components associated with macaque visual and vocal signals Partan Facial expression recognition in rhesus monkeys, Macaca mulatta. The upper teeth, however, are concealed, similar to the play face of the chimpanzee Parr et al. The ability to recognize and accurately interpret facial expressions is critically important for nonhuman primates that rely on these nonverbal signals for social communication. However, the stimulus monkey seems to look at the subject 1 , signaling submission, a situation that has little ambiguity. Mehdi Nellen 5. It is not clear whether subjects used this strategy in cases where the choice was not clear.
Primate Factsheets: Rhesus macaque (Macaca mulatta) Behavior
Parr LA The evolution of face processing in primates. The distribution of these expressions with regard to FACS coded movements is similar to the results of principal components analysis covering a detailed ethogram of visual components associated with macaque visual and vocal signals Partan Gaze following, the ability to track the direction of another's gaze, is thought to be an important component of human and animal social cognition. He emphasized that those engaging in wildlife tourism should never approach or attempt to pet a monkey, even if it doesn't display an aggressive expression. At this early stage of inquiry, it is unclear whether facial expressions are less representational to monkeys or whether the lack of standardized stimuli and high degree of individual variation may best explain these species differences.
The meaning of "macaque" facial expressions
Description: Parr LA The evolution of face processing in primates. Copyright notice and Disclaimer. Round 1 presented the four neutral trials plus the three dyadic trials for the play face e. One of the benefits of dominance for a rhesus macaque is priority access to food and space.