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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Background:

  • Childhood shape representation studies often overlook the dorsal visual pathway.
  • Adults utilize both ventral and dorsal pathways for shape processing.
  • Dorsal pathway shape sensitivity increases posteriorly, mirroring ventral pathway organization.

Purpose of the Study:

  • Investigate the development of dorsal visual pathway shape representations in children.
  • Examine the interplay between ventral and dorsal pathways in early shape perception.
  • Understand age-related differences in shape information processing.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) BOLD signals acquisition.
  • Behavioral data collection using a parametric image scrambling paradigm.
  • Analysis of shape processing in children aged 8-10 years.

Main Results:

  • Children display adult-like large-scale organization of shape processing in both pathways.
  • Posterior dorsal and ventral activation correlated with recognition performance in children.
  • Children were more susceptible to shape information distortion than adults, behaviorally and neurally.

Conclusions:

  • Shape processing in both dorsal and ventral pathways follows a protracted developmental trajectory.
  • Dorsal pathway contributions to shape perception emerge early but mature slowly.
  • Developmental changes in shape processing highlight ongoing neural maturation in childhood.