Sex-contingent face aftereffects depend on perceptual category rather than structural encoding
Sex-contingent face aftereffects depend on perceptual category rather than structural encoding
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DOI：
10.1016/j.cognition.2007.07.018
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发表时间：
2008-04-01
期刊：
影响因子：
3.4
通讯作者：
Conway, C. A.
中科院分区：
文献类型：
--
作者：
Bestelmeyer, P. E. G.;Jones, B. C.;Conway, C. A.
许多研究使用视觉适应来研究最近的面孔经验如何影响感知。虽然与适应阶段期间所见相似的面孔通常在适应后被认为更“正常”，但有可能在一个方向上诱导一个类别（例如女性）的后效，同时在相反方向上诱导另一个类别（例如男性）的后效。这种后效可能反映了对感知类别（例如男性或女性）有选择性的神经元的“类别相关”适应，或编码不同面部模式的物理特征的较低级别神经元的“结构相关”适应。我们比较了这些解释，通过测试适应后的同时相反的后效应（a）两组不同性别类别的面孔（男性和女性）或（B）两组相同性别类别的面孔（女性和超女性），其中女性和超女性组之间的结构差异在数学上与男性和女性组之间的结构差异相同。我们能够诱导相反的后效性别类别之间的适应后，但不适应后的性别类别。这些发现表明，参与编码知觉类别的神经元的性别相关的面孔后效应，不能解释的神经元编码的面孔模式的物理方面。(C)2007 Elsevier B.V.保留所有权利。
Many studies have used visual adaptation to investigate how recent experience with faces influences perception. While faces similar to those seen during adaptation phases are typically perceived as more 'normal' after adaptation, it is possible to induce aftereffects in one direction for one category (e.g. female) and simultaneously induce aftereffects in the opposite direction for another category (e.g. male). Such aftereffects could reflect 'category-contingent' adaptation of neurons selective for perceptual category (e.g. male or female) or 'structure-contingent' adaptation of lower-level neurons coding the physical characteristics of different face patterns. We compared these explanations by testing for simultaneous opposite after effects following adaptation to (a) two groups of faces from distinct sex categories (male and female) or (b) two groups of faces from the same sex category (female and hyper-female) where the structural differences between the female and hyper-female groups were mathematically identical to those between male and female groups. We were able to induce opposite aftereffects following adaptation between sex categories but not after adaptation within a sex category. These findings indicate the involvement of neurons coding perceptual category in sex-contingent face aftereffects and cannot be explained by neurons coding only the physical aspects of face patterns. (C) 2007 Elsevier B.V. All rights reserved.