Stereotypes bias face perception via orbitofrontal-fusiform cortical interaction.
Stereotypes bias face perception via orbitofrontal-fusiform cortical interaction.
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DOI：
10.1093/scan/nsaa165
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发表时间：
2021-03-05
影响因子：
4.2
通讯作者：
Freeman JB
中科院分区：
文献类型：
--
作者：
Barnett BO;Brooks JA;Freeman JB
先前的研究表明，刻板印象等社会概念联想可以影响面部视觉表征和大脑中的大脑皮质腹侧区域(如梭状回)的神经模式反应。目前的模型表明，这种社会概念的影响需要知觉过程中内侧眼眶前额叶皮质(MOFC)的反馈信号。后向掩蔽可能会扰乱这种信号，因为它是一种已知的减少VTC区域和VTC以外区域之间的功能连通性的技术。在功能磁共振成像(FMRI)中，受试者被动地观察蒙面和非蒙面的面孔，扫描后，评估知觉偏差和刻板印象的联系。职训局以及功能组别和mOFC的多体素面孔表示，反映了当面孔被揭开时的刻板偏见的看法，但当面孔被遮盖时，这种影响被消除。然而，职训局仍然保留处理蒙面面孔的能力，并对它们的类别区分十分敏感。功能连接性分析证实，掩蔽干扰了mOFC-FG的连接，这预示着FG中刻板印象联系的影响会减少。综上所述，我们的研究结果表明，与刻板印象相一致的面孔表征的偏差不仅仅源于职训局和功能组别内部的内在加工，而是部分取决于mOFC在感知过程中自上而下的反馈。
Previous research has shown that social-conceptual associations, such as stereotypes, can influence the visual representation of faces and neural pattern responses in ventral temporal cortex (VTC) regions, such as the fusiform gyrus (FG). Current models suggest that this social-conceptual impact requires medial orbitofrontal cortex (mOFC) feedback signals during perception. Backward masking can disrupt such signals, as it is a technique known to reduce functional connectivity between VTC regions and regions outside VTC. During functional magnetic resonance imaging (fMRI), subjects passively viewed masked and unmasked faces, and following the scan, perceptual biases and stereotypical associations were assessed. Multi-voxel representations of faces across the VTC, and in the FG and mOFC, reflected stereotypically biased perceptions when faces were unmasked, but this effect was abolished when faces were masked. However, the VTC still retained the ability to process masked faces and was sensitive to their categorical distinctions. Functional connectivity analyses confirmed that masking disrupted mOFC–FG connectivity, which predicted a reduced impact of stereotypical associations in the FG. Taken together, our findings suggest that the biasing of face representations in line with stereotypical associations does not arise from intrinsic processing within the VTC and FG alone, but instead it depends in part on top-down feedback from the mOFC during perception.
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影响因子：
--
作者：
Freeman JB;Stolier RM;Brooks JA
通讯作者：
Brooks JA
DOI：
10.1073/pnas.0905362106
发表时间：
2009-12-01
影响因子：
11.1
作者：
Caruso, Eugene M.;Mead, Nicole L.;Balcetis, Emily
通讯作者：
Balcetis, Emily
影响因子：
4.2
作者：
Contreras, Juan Manuel;Banaji, Mahzarin R.;Mitchell, Jason P.
通讯作者：
Mitchell, Jason P.
影响因子：
48
作者：
Esteban, Oscar;Markiewicz, Christopher J.;Gorgolewski, Krzysztof J.
通讯作者：
Gorgolewski, Krzysztof J.
影响因子：
1.9
作者：
Brooks, Jeffrey A.;Stolier, Ryan M.;Freeman, Jonathan B.
通讯作者：
Freeman, Jonathan B.