作者
Thomas B Sims, Carien M Van Reekum, Tom Johnstone, Bhismadev Chakrabarti
发表日期
2012/7
期刊
Psychophysiology
卷号
49
期号
7
页码范围
998-1004
简介
Spontaneous mimicry is a marker of empathy. Conditions characterized by reduced spontaneous mimicry (e.g., autism) also display deficits in sensitivity to social rewards. We tested if spontaneous mimicry of socially rewarding stimuli (happy faces) depends on the reward value of stimuli in 32 typical participants. An evaluative conditioning paradigm was used to associate different reward values with neutral target faces. Subsequently, electromyographic activity over the Zygomaticus Major was measured whilst participants watched video clips of the faces making happy expressions. Higher Zygomaticus Major activity was found in response to happy faces conditioned with high reward versus low reward. Moreover, autistic traits in the general population modulated the extent of spontaneous mimicry of happy faces. This suggests a link between reward and spontaneous mimicry and provides a possible underlying …
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TB Sims, CM Van Reekum, T Johnstone, B Chakrabarti - Psychophysiology, 2012