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Repetition effects in human ERPs to faces.

Stefan R Schweinberger¹, Markus F Neumann¹

¹DFG Research Unit Person Perception, Friedrich Schiller University Jena, Germany; Australian Research Council Centre of Excellence in Cognition and its Disorders, The University of Western Australia, Australia.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

|December 18, 2015

Summary

This review links specific event-related brain potential (ERP) components to face perception processes. Different ERPs reflect repetition effects for face categories, spatial configurations, individual identities, and semantic information.

Keywords:

ERPs Face recognition N170 N250 N250r N400 P200 Repetition

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Area of Science:

Cognitive Neuroscience
Neuroscience
Psychology

Background:

Face perception involves complex neural processes.
Event-related brain potentials (ERPs) offer a temporal window into these processes.
Understanding repetition effects in face perception is key to elucidating neural mechanisms.

Purpose of the Study:

To review 25 years of research on how repeating face information affects human ERPs.
To link specific ERP components to distinct functional aspects of face identity processing.
To provide an overview of ERP correlates for various face repetition effects.

Main Methods:

Review of existing research on face repetition and ERPs.
Analysis of ERP components (N170, P200, N250r, N400) in response to repeated facial information.
Examination of effects related to category, spatial configuration, identity, and semantic repetition.

Main Results:

Categorical repetition (face vs. non-face) suppresses the occipitotemporal N170.
Face spatial prototypicality influences the occipitotemporal P200.
Repetition priming of individual face identity enhances the occipitotemporal N250r.
Learning individual face identity shows a long-lasting N250 effect.
Semantic repetition in familiar person recognition elicits a central-parietal N400.

Conclusions:

Specific ERP components are systematically associated with distinct stages of face identity processing.
ERPs provide valuable insights into the temporal dynamics of face perception.
Further research using ERPs can illuminate neuronal correlates of face perception under natural viewing conditions.