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Related Experiment Video

Updated: Oct 11, 2025

Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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Homogenization of face neural representation during development.

Xue Tian1, Xin Hao2, Yiying Song3

  • 1Faculty of Psychology, Tianjin Normal University, Tianjin 300387, China.

Developmental Cognitive Neuroscience
|November 27, 2021
PubMed
Summary

Children

Keywords:
Between-Participant Pattern SimilarityRepresentation developmentRepresentation homogenizationVentral visual cortex

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Background:

  • Face processing ability develops throughout childhood into adolescence.
  • The precise mechanisms driving this developmental change remain largely unknown.
  • Existing hypotheses suggest qualitative or quantitative shifts in neural representations.

Purpose of the Study:

  • To investigate the developmental trajectory of face representation mechanisms.
  • To differentiate between qualitative (different templates) and quantitative (reduced variance) developmental hypotheses.
  • To explore the generalizability of these developmental principles to other visual domains.

Main Methods:

  • Utilized between-participant correlation to assess activation pattern similarity in brain regions.
  • Compared neural representations of faces in late-childhood children and adults.
  • Examined representations in the fusiform face area (FFA) and occipital face area (OFA), and a scene-selective region.

Main Results:

  • Children exhibited greater variation in face representations compared to adults within their respective groups.
  • Activation pattern similarity within the children's group was lower than within the adults' group.
  • Children's face representations showed similar similarity to both children's and adults' group templates, suggesting a shared template.

Conclusions:

  • The development of face representation involves a homogenization process, moving from greater variance in childhood to increased homogeneity in adulthood.
  • This developmental shift from variance to homogeneity appears to be a general principle in the ventral visual cortex.
  • Findings support a quantitative change model, where neural representations become more consistent with age.