a School of Psychology , University of Birmingham , Birmingham , UK.
Soc Neurosci. 2014;9(3):235-48. doi: 10.1080/17470919.2014.884981. Epub 2014 Feb 7.
The current research examined the influence of ingroup/outgroup categorization on brain event-related potentials measured during perceptual processing of own- and other-race faces. White participants performed a sequential matching task with upright and inverted faces belonging either to their own race (White) or to another race (Black) and affiliated with either their own university or another university by a preceding visual prime. Results demonstrated that the right-lateralized N170 component evoked by test faces was modulated by race and by social category: the N170 to own-race faces showed a larger inversion effect (i.e., latency delay for inverted faces) when the faces were categorized as other-university rather than own-university members; the N170 to other-race faces showed no modulation of its inversion effect by university affiliation. These results suggest that neural correlates of structural face encoding (as evidenced by the N170 inversion effects) can be modulated by both visual (racial) and nonvisual (social) ingroup/outgroup status.
当前的研究考察了群体内/群体外分类对自身种族和其他种族面孔知觉加工过程中脑事件相关电位的影响。白人参与者在进行与正立和倒立的面孔相关的连续匹配任务时，这些面孔属于他们自己的种族（白人）或另一个种族（黑人），并且通过之前的视觉提示与自己的大学或另一所大学有关联。结果表明，测试面孔诱发的右侧 N170 成分受到种族和社会类别调节：当面孔被归类为其他大学成员而不是自己大学成员时，自身种族面孔的 N170 表现出更大的反转效应（即，倒置面孔的潜伏期延迟）；而对于其他种族面孔，其反转效应不受大学归属的调节。这些结果表明，结构面孔编码的神经相关性（如 N170 反转效应所证明的那样）可以受到视觉（种族）和非视觉（社会）内群体/外群体身份的调节。
