Why do I like you when you behave like me? Neural mechanisms mediating positive consequences of observing someone being imitated

Social psychological and developmental research revealed that imitation serves a fundamental social function. It has been shown that human beings have the tendency to automatically mirror the behavior of others—the so-called chameleon effect. Furthermore, it has been demonstrated that being imitated leads to positive feelings toward the imitator. But why do we feel more positive about someone who imitates us? In the current fMRI study we aimed at exploring the neural correlates of the positive consequences of being imitated by means of an observation paradigm. Our results indicate that being imitated compared to not being imitated activates brain areas that have been associated with emotion and reward processing, namely medial orbitofrontal cortex/ventromedial prefrontal cortex (mOFC/vmPFC, GLM whole-brain contrast). Moreover mOFC/vmPFC shows higher effective connectivity with striatum and mid-posterior insula during being imitated compared to not being imitated.

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