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首页> 外文期刊>The European Journal of Neuroscience >Event-related potentials reflect heterogeneity of developmental prosopagnosia.
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Event-related potentials reflect heterogeneity of developmental prosopagnosia.

机译：事件相关电位反映了发育性停经的异质性。

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摘要

Event-related potential (ERP) studies of developmental prosopagnosia (DP) are rare. Previous ERP investigations have reported smaller N170 amplitude differences between faces and objects in at least three prosopagnosics. The present study is based on a combination of behavioural and electrophysiological assessment of face processing. The aim was to investigate the face-specifity of the N170 in both healthy subjects and a group of DP individuals (N = 4), using famous and nonfamous faces, caricatures and houses as stimuli. All prosopagnosic subjects showed impairments in recognition of famous faces, memory for faces and learning new faces in behavioural assessment. In healthy subjects the largest effects were found at parieto-occipital electrode positions (PO7 and PO8), along with a familiarity effect at these electrode positions. Thus, parieto-occipital areas appear to play an important role in face processing. Three prosopagnosics showed reliable N170 amplitude differences between faces and nonface stimuli, whereas one DP individual showed significantly reduced amplitude differences between faces and nonface objects. The behavioural and electrophysiological data support the idea that DP reflects a heterogeneous impairment and that face processing deficits are not necessarily correlated with a lack of face-specific N170.
机译：发育性绝经（DP）的事件相关潜能（ERP）研究很少。先前的ERP研究表明，至少在三种假体学中，面部和物体之间的N170振幅差异较小。本研究基于面部处理的行为和电生理评估相结合。目的是使用有名和无名的面孔，漫画和房屋作为刺激，调查N170在健康受试者和一组DP个体（N = 4）中的面部特异性。所有围绝症的受试者在识别著名面孔，记忆面孔以及学习行为评估的新面孔方面均表现出障碍。在健康受试者中，在顶枕电极位置（PO7和PO8）发现了最大的影响，同时在这些电极位置也发现了熟悉的影响。因此，顶枕区在面部处理中似乎起着重要作用。 3位患者的近身诊断显示了面部和非面部刺激之间可靠的N170幅度差异，而一名DP个体显示面部和非面部对象之间的幅度差异明显减小。行为和电生理数据支持以下观点：DP反映了异质性损伤，面部处理缺陷不一定与缺乏面部特定的N170有关。

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