Development of MPFC function mediates shifts in self-protective behavior provoked by social feedback

Leehyun Yoon, Leah H. Somerville and Hackjin Kim ()
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Leehyun Yoon: Korea University
Leah H. Somerville: Harvard University
Hackjin Kim: Korea University

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract How do people protect themselves in response to negative social feedback from others? How does such a self-protective system develop and affect social decisions? Here, using a novel reciprocal artwork evaluation task, we demonstrate that youths show self-protective bias based on current negative social evaluation, whereas into early adulthood, individuals show self-protective bias based on accumulated evidence of negative social evaluation. While the ventromedial prefrontal cortex (VMPFC) mediates self-defensive behavior based on both current and accumulated feedback, the rostromedial prefrontal cortex (RMPFC) exclusively mediates self-defensive behavior based on longer feedback history. Further analysis using a reinforcement learning model suggests that RMPFC extending into VMPFC, together with posterior parietal cortex (PPC), contribute to age-related increases in self-protection bias with deep feedback integration by computing the discrepancy between current feedback and previously estimated value of self-protection. These findings indicate that the development of RMPFC function is critical for sophisticated self-protective decisions.

Date: 2018
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DOI: 10.1038/s41467-018-05553-2

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