Department of Computer Science and Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka Tempaku, Toyohashi, Aichi 441-8580, Japan.
Neuropsychologia. 2012 Aug;50(10):2499-505. doi: 10.1016/j.neuropsychologia.2012.06.022. Epub 2012 Jul 2.
Faces play an important role in social interaction by conveying information and emotion. Of the various components of the face, color particularly provides important clues with regard to perception of age, sex, health status, and attractiveness. In event-related potential (ERP) studies, the N170 component has been identified as face-selective. To determine the effect of color on face processing, we investigated the modulation of N170 by facial color. We recorded ERPs while subjects viewed facial color stimuli at 8 hue angles, which were generated by rotating the original facial color distribution around the white point by 45° for each human face. Responses to facial color were localized to the left, but not to the right hemisphere. N170 amplitudes gradually increased in proportion to the increase in hue angle from the natural-colored face. This suggests that N170 amplitude in the left hemisphere reflects processing of facial color information.
面部在社交互动中起着重要的作用，通过传递信息和情感。在面部的各种组成部分中，颜色特别提供了关于年龄、性别、健康状况和吸引力的感知的重要线索。在事件相关电位 (ERP) 研究中，N170 成分被确定为面孔选择性的。为了确定颜色对面部处理的影响，我们研究了面部颜色对面部 N170 的调制。当受试者观看由每个面孔的原始面部颜色分布围绕白点旋转 45°生成的 8 个色调角度的面部颜色刺激时，我们记录了 ERPs。对面部颜色的反应局限于左半球，而不是右半球。随着色调角度从自然色面孔的增加，N170 振幅逐渐增加。这表明左半球的 N170 振幅反映了对面部颜色信息的处理。
