Emotional Mimicry Beyond the Face? Rapid Face and Body Responses to Facial Expressions

Emotional mimicry-quick and spontaneous matching of another's expressions-is a well-documented phenomenon that is associated with numerous social outcomes. Although the mechanisms underlying mimicry are not fully understood, there is growing awareness that it is more than a one-to-one motor matching of others' expressions and may be the result of neural simulation. If true, it is possible that mimicry could extend to other parts of the body, even in the absence of visual information from that body part. Indeed, we found that passively viewing anger and fear expressions, without accompanying information from the body, voice or other channels, produced both facial mimicry and corresponding responses in arm muscles that make a fist or a defensive posture. This suggests that observers simulated observed expressions and that activity may have spilled over to other areas to create a body response.