Examining the time course of young and older adults' mimicry of enjoyment and nonenjoyment smiles

摘要: Electromyographic (EMG) research suggests that implicit mimicry of happy facial expressions remains intact with age. However, age-related differences in EMG responses to enjoyment and nonenjoyment smiles have not been explored. The present study assessed younger older adults' orbicularis oculi (O.oculi; eye) zygomaticus major (Z.major; cheek) reactions images individuals displaying smiles. Both age groups mimicked displays smiles, there were no O.oculi Z.major activity these expressions. compared participants, adults showed extended In an explicit ratings task, also more likely than participants attribute feelings happiness both participants' the expressed independent their responding expressions, suggesting emotion recognition may reflect separate processes. Potential mechanisms underlying findings, as well implications for social affiliation adulthood, are considered.