Stekelenburg Jeroen J, de Gelder Beatrice
Psychonomics Laboratory, Tilburg University, P.O. Box 90153, 5000 LE Tilburg, The Netherlands.
Neuroreport. 2004 Apr 9;15(5):777-80. doi: 10.1097/00001756-200404090-00007.
The present study investigated the neural correlates of perceiving human bodies. Focussing on the N170 as an index of structural encoding, we recorded event-related potentials (ERPs) to images of bodies and faces (either neutral or expressing fear) and objects, while subjects viewed the stimuli presented either upright or inverted. The N170 was enhanced and delayed to inverted bodies and faces, but not to objects. The emotional content of faces affected the left N170, the occipito-parietal P2, and the fronto-central N2, whereas body expressions affected the frontal vertex positive potential (VPP) and a sustained fronto-central negativity (300-500 ms). Our results indicate that, like faces, bodies are processed configurally, and that within each category qualitative differences are observed for emotional as opposed to neutral images.
本研究调查了感知人体的神经关联。以N170作为结构编码指标，我们记录了被试对身体和面部（中性或表现出恐惧）以及物体图像的事件相关电位（ERP），同时被试观看以正立或倒置形式呈现的刺激。N170对倒置的身体和面部增强且延迟，但对物体没有这种情况。面部的情感内容影响左N170、枕顶叶P2和额中央N2，而身体表情影响额顶正电位（VPP）和持续的额中央负电位（300 - 500毫秒）。我们的结果表明，与面部一样，身体也是以整体形式进行加工的，并且在每个类别中，情感图像与中性图像相比存在质性差异。
