Neural adaptation is related to face repetition irrespective of identity: a reappraisal of the N170 effect.
Neural adaptation is related to face repetition irrespective of identity: a reappraisal of the N170 effect.
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神经适应性与面部重复有关，而不论身份：重新评估N170效应。
DOI：
10.1007/s00221-011-2546-x
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发表时间：
2011-03
影响因子：
2
通讯作者：
Bentin, Shlomo
中科院分区：
文献类型：
--
作者：
Amihai, Ido;Deouell, Leon Y.;Bentin, Shlomo
事件相关电位提供了面部独特的神经活动的证据，在面部刺激开始后约170 ms达到峰值（N170效应）。我们通过比较当目标面部前面有相同的面部图像或不同的面部时与当目标面部前面有物体时N170振幅的适应性，研究了N170效应所反映的感知机制的作用。在两个实验中，我们证明了N170同样适用于重复相同或不同的面孔。因此，我们的研究结果表明，N170是敏感的类别，而不是身份的面孔。这一结果支持了N170效应反映了感知机制的活动的假设，该感知机制将面部与物体区分开来，并将面部刺激流到专门的电路，专门用于编码和解码关于面部的信息。
Event-related potentials offer evidence for face distinctive neural activity that peaks at about 170 ms following the onset of face stimuli (the N170 effect). We investigated the role of the perceptual mechanism reflected by the N170 effect by comparing the adaptation of the N170 amplitude when target faces were preceded either by identical face images or by different faces relative to when they were preceded by objects. In two experiments, we demonstrate that the N170 is equally adapted by repetition of the same or different faces. Thus, our findings show that the N170 is sensitive to the category rather than the identity of a face. This outcome supports the hypothesis that the N170 effect reflects the activity of a perceptual mechanism which discriminates faces from objects and streams face stimuli to dedicated circuits, specialized in encoding and decoding information about the face.
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