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Updated: Apr 9, 2026
Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior
Published on: November 14, 2018
Theta- and alpha-band EEG activity in response to eye gaze cues in early infancy
Christine Michel1, Manuela Stets2, Eugenio Parise3
1Institute of Psychology, Heidelberg University, Hauptstrasse 47-51, 69117 Heidelberg, Germany.
Insights
Infants develop understanding of eye gaze cues between 4 and 9 months. Alpha brainwave activity changes when infants see object-directed gaze, while theta activity changes for object-averted gaze, showing early social learning and attention development.
Area of Science:
- Developmental neuroscience
- Cognitive development
- Infant perception
Background:
- Eye gaze is a crucial social cue for infants.
- Understanding referential eye gaze develops during the first year of life.
- Brain oscillations (theta and alpha) are key indicators of cognitive processes.
Purpose of the Study:
- To investigate the developmental trajectory of infants' processing of object-directed vs. object-averted eye gaze.
- To examine changes in theta and alpha brainwave activity in response to different eye gaze cues.
- To understand the neural mechanisms underlying the development of referential gaze perception.
Main Methods:
- Electroencephalography (EEG) was used to record brain activity.
- Participants included infants aged 2, 4, 5, and 9 months.
- Analysis focused on theta and alpha oscillations during visual attention tasks involving different eye gaze directions.
Main Results:
- No significant differences in brain activity were observed at 2 months of age.
- Infants aged 4 and 9 months showed greater alpha-band desynchronization for object-directed gaze.
- Five-month-old infants exhibited increased theta synchronization for object-averted gaze.
Conclusions:
- Alpha desynchronization may indicate early social object learning mechanisms.
- Theta synchronization suggests activation of the executive attention network.
- The interplay of theta and alpha activity reflects developmental shifts in social cognition and attention during infancy.
Abstract:
In order to elucidate the development of how infants use eye gaze as a referential cue, we investigated theta and alpha oscillations in response to object-directed and object-averted eye gaze in infants aged 2, 4, 5, and 9months. At 2months of age, no difference between conditions was found. In 4- and 9-month-olds, alpha-band activity desynchronized more in response to faces looking at objects compared to faces looking away from objects. Theta activity in 5-month-old infants differed between conditions with more theta synchronization for object-averted eye gaze. Whereas alpha desynchronization might reflect mechanisms of early social object learning, theta is proposed to imply activity in the executive attention network. The interplay between alpha and theta activity represents developmental changes in both kinds of processes during early infancy.
