What is adapted in face adaptation? The neural representations of expression in the human visual system
What is adapted in face adaptation? The neural representations of expression in the human visual system
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DOI：
10.1016/j.brainres.2006.09.104
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发表时间：
2007-01-05
期刊：
影响因子：
2.9
通讯作者：
Barton, Jason J. S.
中科院分区：
文献类型：
--
作者：
Fox, Christopher J.;Barton, Jason J. S.
人类视觉系统中面部表情的神经表征还没有很好的定义。使用适应范式，我们研究了各种刺激对表情知觉产生的后效。适应一张脸，这是用来创建两个表情之间的变形，基本上有偏见的变形的脸内的表情感知远离适应表达。这种适应并不是基于低层次的图像属性，因为同一个人的不同图像显示该表情会产生同样强大的后效。较小但重要的后遗症是由不同个体的图像产生的，不分性别。非面部视觉，听觉，或口头表达的情绪没有产生显着的后效。这些结果表明，适应影响至少两种表达的神经表征：一种是特定于个人（而不是图像）的，另一种是代表不同面部身份的表达。身份无关的后效表明，在人类视觉系统中存在一个“视觉语义”的面部表情。(c)2006 Elsevier B.V.保留所有权利。
The neural representation of facial expression within the human visual system is not well defined. Using an adaptation paradigm, we examined aftereffects on expression perception produced by various stimuli. Adapting to a face, which was used to create morphs between two expressions, substantially biased expression perception within the morphed faces away from the adapting expression. This adaptation was not based on low-level image properties, as a different image of the same person displaying that expression produced equally robust aftereffects. Smaller but significant aftereffects were generated by images of different individuals, irrespective of gender. Non-face visual, auditory, or verbal representations of emotion did not generate significant aftereffects. These results suggest that adaptation affects at least two neural representations of expression: one specific to the individual (not the image), and one that represents expression across different facial identities. The identity-independent aftereffect suggests the existence of a 'visual semantic' for facial expression in the human visual system. (c) 2006 Elsevier B.V. All rights reserved.