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面部变形后效的电生理相关性

Electrophysiological correlates of face distortion after-effects.

作者信息

Zimmer Márta, Kovács Gyula

机构信息

Department of Cognitive Science, Budapest University of Technology and Economics, Stoczek 2, Budapest, Hungary.

出版信息

Q J Exp Psychol (Hove). 2011 Mar;64(3):533-44. doi: 10.1080/17470218.2010.501964. Epub 2010 Aug 2.

Abstract

When observers are exposed to a distorted face the perceived configuration of a subsequently presented face is altered, a phenomenon called face distortion after-effect (FDAE). We compared the face-related components of the event-related potential (ERP) after adaptation to noise images--veridical and distorted faces. We found large bilateral adaptation effects on the P100 and N170 components that are related to face detection. Moreover, we found smaller adaptation effects on the N170, recorded over the right hemisphere, which can be related to the behavioural distortion after-effect and to face configurations. Our results suggest that the observed ERP adaptation effects are general for various steps of face processing and that the FDAEs similarly to gender after-effects are related to the early face-specific ERP components.

摘要

当观察者暴露于一张扭曲的面孔时,随后呈现的面孔的感知构型会发生改变,这一现象被称为面部扭曲后效(FDAE)。我们比较了适应噪声图像(真实面孔和扭曲面孔)后事件相关电位(ERP)中与面孔相关的成分。我们发现,与面孔检测相关的P100和N170成分存在较大的双侧适应效应。此外,我们发现,在右半球记录到的N170存在较小的适应效应,这可能与行为扭曲后效以及面孔构型有关。我们的结果表明,观察到的ERP适应效应在面孔加工的各个阶段都是普遍存在的,并且与性别后效类似,面部扭曲后效与早期特定于面孔的ERP成分有关。

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