Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia.
Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia.
复制标题
搜索面部特征或表情：设置发育性面容失认中的尺寸效应。
DOI：
10.1162/jocn_a_01519
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发表时间：
2020
影响因子：
3.2
通讯作者：
Barton,JasonJS
中科院分区：
文献类型：
--
作者：
Djouab,Sara;Albonico,Andrea;Yeung,ShannaC;Malaspina,Manuela;Mogard,Anna;Wahlberg,Rachel;Corrow,SherryseL;Barton,JasonJS
视觉搜索过程中的集合大小效应反映了处理负荷的影响，从而反映了感知机制的效率。我们的目标是调查是否与发展性面容失认症的个人显示增加集大小的影响时，搜索面孔的面孔身份，以及如何比较，以搜索面部表情。我们测试了29名健康人和13名患有发育性面容失认症的人。研究人员向参与者展示了三到七张面孔，以判断这些面孔的身份或表情在所有刺激中是否相同，或者是否有一张不同。集合大小效应是数组中的面数与响应时间之间的线性回归的斜率。准确性是相似的控制和prosopagnosic参与者。发展prosopagnosic参与者显示增加集大小的影响，在面对身份搜索，但不是在表情搜索。单参与者分析显示，11发展prosopagnosic参与者表现出一个假定的经典解离，与身份障碍，但不表达搜索。信号检测理论分析表明，同一性集合大小效应在区分面孔失认症患者和正常人方面具有高度可靠性。最后，相同到不同试验的集大小比与控制参与者和从事表情搜索的面容失认症参与者的自我终止序列搜索模型的预测一致，但与面容失认症队列的身份搜索预测偏离。我们的结论是，面孔集的大小效应揭示了一个高度普遍的和选择性的知觉效率低下的加工面孔的身份在发展性面容失认症。
The set size effect during visual search indexes the effects of processing load and thus the efficiency of perceptual mechanisms. Our goal was to investigate whether individuals with developmental prosopagnosia show increased set size effects when searching faces for face identity and how this compares to search for face expression. We tested 29 healthy individuals and 13 individuals with developmental prosopagnosia. Participants were shown sets of three to seven faces to judge whether the identities or expressions of the faces were the same across all stimuli or if one differed. The set size effect was the slope of the linear regression between the number of faces in the array and the response time. Accuracy was similar in both controls and prosopagnosic participants. Developmental prosopagnosic participants displayed increased set size effects in face identity search but not in expression search. Single-participant analyses reveal that 11 developmental prosopagnosic participants showed a putative classical dissociation, with impairments in identity but not expression search. Signal detection theory analysis showed that identity set size effects were highly reliable in discriminating prosopagnosic participants from controls. Finally, the set size ratios of same to different trials were consistent with the predictions of self-terminated serial search models for control participants and prosopagnosic participants engaged in expression search but deviated from those predictions for identity search by the prosopagnosic cohort. We conclude that the face set size effect reveals a highly prevalent and selective perceptual inefficiency for processing face identity in developmental prosopagnosia.