The Thatcher illusion seen by the brain: An event-related brain potentials study
The Thatcher illusion seen by the brain: An event-related brain potentials study
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DOI：
10.1016/j.cogbrainres.2005.03.008
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发表时间：
2005-08-01
期刊：
影响因子：
--
通讯作者：
Leder, H
中科院分区：
文献类型：
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作者：
Carbon, CC;Schweinberger, SR;Leder, H
在“撒切尔化”面孔中，眼睛和嘴巴区域是上下颠倒的。只有当它们直立呈现时，才会被认为是严重扭曲的。常见理论通过倒置面孔的配置信息丢失来解释这种效应。我们使用事件相关电位（ERP）研究了撒切尔化的神经相关性。 16 名惯用右手的参与者对撒切尔夫人或原来熟悉的面孔进行身份分类，以 0 度、90 度或 180 度的方向呈现 34 毫秒或 200 毫秒。对于枕颞 N170，我们发现 (1) 方向的强烈非线性效应以及 (2) 撒切尔化与方向之间的相互作用：撒切尔化导致直立脸的 N170 较大，但倒立脸的 N170 较小。撒切尔化对倒脸的 N170 效应的新发现表明，撒切尔化和原始倒脸的神经编码存在差异，尽管撒切尔化逃避了倒脸的主观感知。 (c) 2005 Elsevier B.V. 保留所有权利。
In "Thatcherized" faces, the eyes and mouth regions are turned upside-down. Only when presented upright they are perceived as severely distorted. Common theories explain this effect by the loss of configural information for inverted faces. We investigated neural correlates of Thatcherization using event related potentials (ERPs). Sixteen right-handed participants performed identity classifications on Thatcherized or original familiar faces, presented either for 34 ms or 200 ms at an orientation of either 0 degrees, 90 degrees or 180 degrees. For the occipito-temporal N170, we found (1) strong non-linear effects of orientation and (2) interactions between Thatcherization and orientation: Thatcherization resulted in larger N170 for upright faces, but smaller N170 for inverted faces. The novel finding of N170 effects of Thatcherization in inverted faces suggests differences in the neural encoding of Thatcherized and original inverted faces, even though Thatcherization escapes subjective perception in inverted faces. (c) 2005 Elsevier B.V. All rights reserved.