What's behind a face: person context coding in fusiform face area as revealed by multivoxel pattern analysis.
What's behind a face: person context coding in fusiform face area as revealed by multivoxel pattern analysis.
复制标题
面部背后是什么：多体素模式分析揭示了梭形面部区域中的人物上下文编码。
作者：
J. Hurk;Francesco Gentile;Bernadette M. Jansma
人脸识别包括视觉特征和概念知识的处理。研究表明，梭状面孔区（FFA）是敏感的面孔身份一般忽略了这种分离。本研究是第一个孤立的概念面孔处理，使用的话，而不是在一个人的情况下，面孔。该设计包括两种不同的条件。在一种情况下，参与者被呈现在分类水平上彼此相关的词块（例如，汽车品牌、欧洲城市）。第二个条件由与特定面孔的个性特征相关的单词块组成。这两个条件都是从相同的8 × 8单词矩阵创建的，从而控制了跨条件的视觉输入。单变量统计学对比未得出FFA中2种条件之间的任何显著差异。然而，机器学习分类算法能够成功地学习这两个上下文之间的函数关系及其在FFA中的底层响应模式，这表明这些激活模式可以为不同的语义上下文编码。这些结果表明，FFA的处理水平超出了面部特征。这对FFA在人脸识别中的作用的争论有很大的影响。
The identification of a face comprises processing of both visual features and conceptual knowledge. Studies showing that the fusiform face area (FFA) is sensitive to face identity generally neglect this dissociation. The present study is the first that isolates conceptual face processing by using words presented in a person context instead of faces. The design consisted of 2 different conditions. In one condition, participants were presented with blocks of words related to each other at the categorical level (e.g., brands of cars, European cities). The second condition consisted of blocks of words linked to the personality features of a specific face. Both conditions were created from the same 8 × 8 word matrix, thereby controlling for visual input across conditions. Univariate statistical contrasts did not yield any significant differences between the 2 conditions in FFA. However, a machine learning classification algorithm was able to successfully learn the functional relationship between the 2 contexts and their underlying response patterns in FFA, suggesting that these activation patterns can code for different semantic contexts. These results suggest that the level of processing in FFA goes beyond facial features. This has strong implications for the debate about the role of FFA in face identification.
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DOI：
10.1016/s0926-6410(00)00056-2
发表时间：
2001-01-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Druzgal, TJ;D'Esposito, M
通讯作者：
D'Esposito, M
影响因子：
3.7
作者：
Mur, Marieke;Ruff, Douglas A.;Kriegeskorte, Nikolaus
通讯作者：
Kriegeskorte, Nikolaus
影响因子：
4.2
作者：
Mur, Marieke;Bandettini, Peter A.;Kriegeskorte, Nikolaus
通讯作者：
Kriegeskorte, Nikolaus
DOI：
10.1016/j.cogbrainres.2003.11.017
发表时间：
2004-06-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Ranganath, C;DeGutis, J;D'Esposito, M
通讯作者：
D'Esposito, M