Brain potential correlates of face recognition: Geometric distortions and the N250r brain response to stimulus repetitions
Brain potential correlates of face recognition: Geometric distortions and the N250r brain response to stimulus repetitions
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DOI：
10.1111/j.1469-8986.2008.00663.x
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发表时间：
2008-07-01
期刊：
影响因子：
3.7
通讯作者：
Schweinberger, Stefan R.
中科院分区：
文献类型：
--
作者：
Bindemann, Markus;Burton, A. Mike;Schweinberger, Stefan R.
N250r是一种事件相关电位，它与识别过程中熟悉面孔的图像无关表征的激活有关。然而，N250r也显示出一定程度的图像特异性，与相同图像的重复相比，同一张脸的不同图像的重复激活减少，这表明有一个组件编码了两个人脸图像之间的视觉重叠。这项研究调查了N250r在水平或垂直拉伸时是否同样地衰减到同一张脸的未拉伸图像中。结果证实，N250r在同一张脸的重复图像上大于在同一张脸的不同图像上。尽管如此，N250r对于相同的面部图像和拉伸到未拉伸的面部的启动效果是相同的。这一发现表明，N250r不是简单地反映两个面孔图像之间的表面视觉重叠，并支持它与人的识别有关的概念。
The N250r is an event-related potential that has been related to activation of image-independent representations of familiar faces during recognition. However, N250r also shows a degree of image specificity, with reduced activation across repetitions of different images of the same face compared to repetitions across the same image, suggesting a component that codes the visual overlap between two face images. This study investigated whether N250r is equally attenuated when horizontally or vertically stretched faces prime an unstretched image of the same face. The results confirm that N250r is larger across repetitions of the same face image than across different images of the same face. Despite this, N250r was equivalent for priming by the same face image and priming from stretched onto unstretched faces. This finding demonstrates that N250r does not simply reflect the superficial visual overlap between two face images and supports the notion that it is related to person recognition.