Donders Institute for Brain, Cognition, and Behaviour, Radboud University Nijmegen, NL-6500 HB Nijmegen, The Netherlands.
J Neurosci. 2011 Aug 17;31(33):11934-40. doi: 10.1523/JNEUROSCI.1869-11.2011.
We often change our behavior to conform to real or imagined group pressure. Social influence on our behavior has been extensively studied in social psychology, but its neural mechanisms have remained largely unknown. Here we demonstrate that the transient downregulation of the posterior medial frontal cortex by theta-burst transcranial magnetic stimulation reduces conformity, as indicated by reduced conformal adjustments in line with group opinion. Both the extent and probability of conformal behavioral adjustments decreased significantly relative to a sham and a control stimulation over another brain area. The posterior part of the medial frontal cortex has previously been implicated in behavioral and attitudinal adjustments. Here, we provide the first interventional evidence of its critical role in social influence on human behavior.
我们经常改变自己的行为以符合真实或想象中的群体压力。社会心理学广泛研究了社会影响对我们行为的影响，但它的神经机制在很大程度上仍然未知。在这里，我们证明了通过 theta 爆发经颅磁刺激对后内侧前额叶皮质的短暂下调会降低从众性，这表现为与群体意见一致的从众调整减少。与假刺激和另一个脑区的对照刺激相比，从众行为调整的程度和概率都显著降低。内侧前额叶皮质的后部先前与行为和态度调整有关。在这里，我们提供了干预证据，证明其在人类行为的社会影响中起着关键作用。
