Gutsell Jennifer N, Simon Jeremy C, Jiang Yanyi
Department of Psychology, Brandeis University, USA.
Department of Psychology, Williams College, USA.
Cortex. 2020 Oct;131:42-53. doi: 10.1016/j.cortex.2020.04.037. Epub 2020 Jul 15.
Similar neural circuits are activated during action and the observation of action and such sensorimotor resonance is said to support action understanding and empathy. Previous research, however, shows that group biases can restrict sensorimotor resonance to the social ingroup. Here we test whether an empathic mindset can alleviate such group biases in sensorimotor resonance. Participants adopted either an objective mindset or a perspective taking mindset while writing about a day in the life of a racial outgroup member. Participants in an objective mindset resonated with ingroup members, indicated by significant suppression of the 8-13 Hz electroencephalographic (EEG) mu-rhythm recorded over sensorimotor areas during action observation compared to baseline, but did not show significant mu-suppression in response to outgroup members. In contrast, participants in a perspective taking mindset resonated with both ingroup and outgroup members and significantly more so with outgroup members. Moreover, mindset uniquely affected resonance in response to outgroup members but not in response to ingroup members, with participants who previously took the perspective of an outgroup member later responding with more resonance to the actions of other outgroup members. Together these findings suggest that taking the perspective of a racial outgroup member can reduce group biases in sensorimotor resonance, potentially fostering an intuitive understanding across groups.
在执行动作和观察动作时,类似的神经回路会被激活,这种感觉运动共振据说有助于动作理解和共情。然而,先前的研究表明,群体偏见会将感觉运动共振限制在社会内群体中。在这里,我们测试共情思维模式是否可以减轻感觉运动共振中的这种群体偏见。参与者在描述一个种族外群体成员一天的生活时,要么采用客观思维模式,要么采用换位思考思维模式。采用客观思维模式的参与者与内群体成员产生了共振,这表现为在动作观察期间,与基线相比,感觉运动区域记录的8 - 13赫兹脑电图(EEG)μ节律显著抑制,但对外群体成员没有表现出显著的μ抑制。相比之下,采用换位思考思维模式的参与者与内群体和外群体成员都产生了共振,对外群体成员的共振更明显。此外,思维模式独特地影响了对外群体成员的共振,而对内群体成员的共振没有影响,之前采取外群体成员视角的参与者后来对其他外群体成员的动作反应出更多的共振。这些发现共同表明,采取种族外群体成员的视角可以减少感觉运动共振中的群体偏见,有可能促进跨群体的直观理解。