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Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
06:07

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm

Published on: May 15, 2019

Children are sensitive to averted eyes at the earliest stage of gaze processing

Ikumi Kimura1, Masaya Kubota, Hiroyuki Hirose

  • 1Department of Pediatrics, Faculty of Medicine, the University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655 Japan. kimuraikumi@hotmail.com

Neuroreport
|May 29, 2004
PubMed

Insights

Children

Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Visual Neuroscience

Background:

  • The human MT/V5 area is crucial for processing visual motion.
  • Early visual processing in children differs from adults.
  • Gaze perception is fundamental for social interaction.

Purpose of the Study:

  • To investigate age-related differences in early visual responses to gaze direction.
  • To identify the neural correlates of gaze processing in children and adults.
  • To explore the sensitivity of the P1m component to gaze cues.

Main Methods:

  • Magnetoencephalography (MEG) and electroencephalography (EEG) were used to record brain activity.
  • Participants included healthy children (8-12 years) and adults.
  • Event-related responses to faces with forward vs. averted gaze and mosaic images were analyzed.

Main Results:

  • Children showed a gaze-sensitive right occipito-temporal magnetic field activity (P1m) around 140 ms.
  • The P1m amplitude was larger for averted gaze compared to forward gaze in children.
  • This gaze-sensitive P1m effect was not observed in adults.
  • The neural source of the right P1m in children was localized near the MT/V5 area.

Conclusions:

  • The early occipito-temporal P1m response is sensitive to gaze direction in children.
  • This suggests a developmental trajectory in gaze processing mechanisms.
  • The findings highlight the role of the MT/V5 area in early gaze perception during childhood.

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