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Infant neural sensitivity to eye gaze depends on early experience of gaze communication

Angélina Vernetti1, Nataşa Ganea1, Leslie Tucker1

  • 1Centre for Brain and Cognitive Development, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK.

Developmental Cognitive Neuroscience
|June 12, 2018
PubMed

Insights

Infants with blind parents show different brain responses to eye gaze shifts compared to infants with sighted parents. Early communication experiences shape infant brain development and specialization.

Area of Science:

  • Developmental neuroscience
  • Cognitive neuroscience
  • Infant psychology

Background:

  • The brain's ability to specialize processing based on environmental input is crucial for development.
  • Eye gaze communication is a fundamental aspect of early social interaction and learning.
  • Understanding how early experiences influence neural specialization is key to developmental research.

Purpose of the Study:

  • To investigate the impact of distinct eye gaze communication experiences on infant brain responses to gaze shifts.
  • To determine if visual impairment in a parent affects the specificity of infant brain processing of gaze direction.
  • To explore the role of early caregiver-infant interaction in shaping functional brain specialization.

Main Methods:

  • Recorded event-related potentials (ERPs) in 6- to 10-month-old infants.
  • Compared sighted infants with blind parents (SIBP group) to control infants with sighted parents (CTRL group).
  • Measured brain responses to dynamic gaze shifts (toward and away) presented on a face.

Main Results:

  • Control infants (CTRL group) showed distinct ERPs for toward versus away gaze shifts.
  • Sighted infants with blind parents (SIBP group) did not differentiate between gaze directions in their ERPs.
  • This suggests that specific eye gaze communication experience influences the neural processing of gaze direction in infants.

Conclusions:

  • Early eye gaze communication experience, influenced by parental visual status, shapes infant brain specialization.
  • The findings underscore the critical role of early caregiver-infant interaction in the development of specialized brain functions.
  • Selective brain responses to gaze shifts in infancy are dependent on the quality and nature of early communicative exchanges.

Keywords:
Event-related potentialEye gazeInfant studyNon-verbal communicationSocial experience

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