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Mapping Self-Face Recognition Strategies in Congenital Prosopagnosia

机译：在先天性女性癌症中测绘自我面对识别策略

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Objective: Recent evidence showed that individuals with congenital face processing impairment (congenital prosopagnosia [CP]) are highly accurate when they have to recognize their own face (self-face advantage) in an implicit matching task, with a preference for the right-half of the self-face (right perceptual bias). Yet the perceptual strategies underlying this advantage are unclear. Here, we aimed to verify whether both the self-face advantage and the right perceptual bias emerge in an explicit task, and whether those effects are linked to a different scanning strategy between the self-face and unfamiliar faces. Method: Eye movements were recorded from 7 CPs and 13 controls, during a self/other discrimination task of stimuli depicting the self-face and another unfamiliar face, presented upright and inverted. Results: Individuals with CP and controls differed significantly in how they explored faces. In particular, compared with controls, CPs used a distinct eye movement sampling strategy for processing inverted faces, by deploying significantly more fixations toward the nose and mouth areas, which resulted in more efficient recognition. Moreover, the results confirmed the presence of a self-face advantage in both groups, but the eye movement analyses failed to reveal any differences in the exploration of the self-face compared with the unfamiliar face. Finally, no bias toward the right-half of the self-face was found. Conclusions: Our data suggest that the self-face advantage emerges both in implicit and explicit recognition tasks in CPs as much as in good recognizers, and it is not linked to any specific visual exploration strategies.
机译：目的：最近的证据表明，当他们在隐含匹配任务中识别自己的脸部（自身面部优势）时，具有先天性面部处理障碍（先天性Prosopagnosia [CP]）的个人非常准确，以右半部分偏好自我面对（正确感知偏见）。然而，这种优势的知情策略尚不清楚。在这里，我们旨在验证自我面临的优势和正确的感知偏差是否出现在明确的任务中，以及这些效果是否与自面部和陌生面之间的不同扫描策略相关联。方法：在刺激的自主/其他歧视任务期间，记录了眼球和13个控制，描绘了描绘了自我面对的刺激和另一个不熟悉的面孔，呈现直立并倒置。结果：在他们探索的面孔中，具有CP和控制的个人在很大程度上不同。特别地，与对照相比，CPS使用了一个不同的眼睛运动采样策略来处理倒置面，通过向鼻子和口腔区域进行显着更大的固定，这导致更有效地识别。此外，结果证实了两组中的自我面部优势的存在，但眼睛运动分析未能揭示与陌生面部相比自我面对的探索的任何差异。最后，发现了对自我面对的右半的偏见。结论：我们的数据表明，在良好识别人员中，自我面对的优势在CP中的隐式和显式识别任务中出现，并且与任何特定的视觉勘探策略没有相关联。

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