The role of face shape and pigmentation in other-race face perception: An electrophysiological study
The role of face shape and pigmentation in other-race face perception: An electrophysiological study
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DOI：
10.1016/j.neuropsychologia.2009.10.007
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发表时间：
2010-01-01
期刊：
影响因子：
2.6
通讯作者：
Nelson, Charles A.
中科院分区：
文献类型：
--
作者：
Balas, Benjamin;Nelson, Charles A.
成年观察者通常发现很难识别和区分属于他们视觉经验有限的类别的面孔。这种现象的一个方面通常被称为“其他种族效应”(ORE)，因为这种行为通常在对面孔的感知中非常明显，这些面孔属于不同于观察者的民族或种族群体。人脸识别中的这一后天劣势很可能是由于对面部外观的底层表示进行了高度具体的“调整”，导致了对常见人脸的有效处理，但代价是对其他人脸类别的泛化很差。在目前的研究中，我们使用电生理(事件相关电位或事件相关电位)和行为表现测量来表征由可分离的形状和色素信息定义的种族类别中的面部加工。我们的目标是通过研究特定种族的脸型和色素沉着如何分别调节先前涉及面部加工的神经反应，N170和N250成分，更详细地检验面部外观表征的特异性。我们发现，这两种成分都受到肤色的调节，与脸型无关，但只有N250对脸型表现出敏感。此外，N250似乎只对直立脸部的肤色有不同的反应，显示出对倒置脸部的颜色缺乏敏感度。(C)2009爱思唯尔有限公司。保留所有权利。
Adult observers generally find it difficult to recognize and distinguish faces that belong to categories with which they have limited visual experience. One aspect of this phenomenon is commonly known as the "Other-Race Effect" (ORE) since this behavior is typically highly evident in the perception of faces belonging to ethnic or racial groups other than that of the observer. This acquired disadvantage in face recognition likely results from highly specific "tuning" of the underlying representation of facial appearance, leading to efficient processing of commonly seen faces at the expense of poor generalization to other face categories. In the current study we used electrophysiological (event-related potentials or ERPs) and behavioral measures of performance to characterize face processing in racial categories defined by dissociable shape and pigmentation information. Our goal was to examine the specificity of the representation of facial appearance in more detail by investigating how race-specific face shape and pigmentation separately modulated neural responses previously implicated in face processing, the N170 and N250 components. We found that both components were modulated by skin color, independent of face shape, but that only the N250 exhibited sensitivity to face shape. Moreover, the N250 appears to only respond differentially to the skin color of upright faces, showing a lack of color sensitivity for inverted faces. (C) 2009 Elsevier Ltd. All rights reserved.