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Related Experiment Video

Updated: Jun 21, 2026

Detecting Pre-Stimulus Source-Level Effects on Object Perception with Magnetoencephalography
09:25

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Published on: July 26, 2019

Seeing face-like objects: an event-related potential study.

Owen Churches1, Simon Baron-Cohen, Howard Ring

  • 1Department of Psychiatry, Autism Research Centre, University of Cambridge, Cambridge, UK. ofc20@cam.ac.uk

Neuroreport
|July 31, 2009
PubMed
Summary
This summary is machine-generated.

The N170 brainwave is more pronounced for face-like objects than non-face-like ones. This suggests object perception, not just faces, influences this neural response.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Event-Related Potentials

Background:

  • The N170 component of event-related potentials (ERPs) is a well-established neural marker for face processing.
  • Previous research indicates larger N170 amplitudes for faces compared to other object categories.
  • Variations in N170 amplitude also exist for non-face objects, suggesting broader influences on this component.

Purpose of the Study:

  • To investigate whether the perceived face-likeness of objects influences the N170 amplitude.
  • To test the hypothesis that the N170 response is modulated by the degree to which an object resembles a face.

Main Methods:

  • Recorded event-related potentials (ERPs) from 18 participants.
  • Participants classified presented objects as either 'face like' or 'non-face like'.
  • Included images of actual faces as a control condition.

Main Results:

  • The N170 component showed a significantly larger (more negative) amplitude for objects classified as face-like.
  • Objects classified as non-face-like elicited a smaller N170 amplitude.
  • Actual faces also elicited a robust N170 response, consistent with prior literature.

Conclusions:

  • The amplitude of the N170 ERP component is influenced by the perceived face-likeness of visual stimuli.
  • These findings extend the understanding of the N170 beyond canonical face processing to include object-based face-like properties.
  • Object categorization based on perceived resemblance plays a role in modulating early visual neural responses.