Faces as objects of non-expertise:: Processing of thatcherised faces in congenital prosopagnosia
Faces as objects of non-expertise:: Processing of thatcherised faces in congenital prosopagnosia
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DOI：
10.1068/p5467
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发表时间：
2007-01-01
期刊：
影响因子：
1.7
通讯作者：
Lueschow, Andreas
中科院分区：
文献类型：
--
作者：
Carbon, Claus-Christian;Grueter, Thomas;Lueschow, Andreas
先天性面容失认症（cPA）是一种严重的识别熟悉面孔的障碍，这是一种可能与生俱来的人类特征，没有任何宏观空间大脑异常。根据cPA是基于大脑面部处理缺陷的想法，我们使用了一个具有撒切尔化面部的快速怪诞决策任务，因为撒切尔错觉可以作为大脑破坏的测试（刘易斯和约翰斯顿，1997年感知26 225-227）。在一组14名cPA患者和一组匹配的对照组之间，报告一张脸与方向有关的怪异所需的时间显示出分离模式：对照组的RT遵循一个强的S形函数，取决于从直立方向的旋转，cPA患者的RT显示出一个弱得多的S形趋势，接近线性函数。后一个结果被解释为受损的面部处理的诊断标志，是缺乏面孔失认症的“面部专业知识”的主要原因。
Congenital prosopagnosia (cPA) is a severe disorder in recognising familiar faces, a human characteristic that is presumably innate, without any macro-spatial brain anomalies. Following the idea that cPA is based on deficits of configural face processing, we used a speeded grotesqueness decision task with thatcherised faces, since the Thatcher illusion can serve as a test of configural disruption (Lewis and Johnston, 1997 Perception 26 225-227). The time needed to report the grotesqueness of a face in relation to orientation showed dissociate patterns between a group of fourteen people with cPA and a group of matched controls: whereas the RTs of controls followed a strong sigmoid function depending on rotation from the upright orientation, the RTs of people with cPA showed a much weaker sigmoid trend approaching a linear function. The latter result is interpreted as a diagnostic sign of impaired configural processing, being the primary cause of the absence of 'face expertise' in prosopagnosia.