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Updated: Jun 23, 2026
How to Obtain Reliable Visual Event-related Potentials in Newborns
Published on: October 24, 2019
Event-related potentials to point-light displays of human actions in five-month-old infants
Peter J Marshall1, Thomas F Shipley
1Department of Psychology, Temple University, Philadelphia, Pennsylvania 19122, USA. pjmarsh@temple.edu
Insights
Five-month-old infants can detect disruptions in human movement. Event-related potential (ERP) brainwave patterns show infants recognize canonical human actions versus scrambled ones.
Area of Science:
- Developmental neuroscience
- Cognitive psychology
- Human motion perception
Background:
- Infants' perception of human actions is crucial for social development.
- Understanding early visual processing of biological motion is key.
Purpose of the Study:
- To investigate neurophysiological responses in 5-month-old infants to human actions.
- To determine if infants can differentiate between coherent and disrupted human motion.
Main Methods:
- Event-related potentials (ERPs) were recorded from infants viewing point-light displays.
- Stimuli included upright canonical human actions (walking, kicking, throwing, running) and spatially scrambled versions.
- Brain activity was analyzed across various electrode sites.
Main Results:
- Significant differences in ERP waveforms were observed between canonical and scrambled action displays.
- These neural differences were most pronounced at lateral parietal electrode sites (P7, P8).
- Scrambled stimuli elicited a more positive waveform compared to canonical stimuli.
Conclusions:
- Infants in the first half-year of life show neurophysiological sensitivity to the human form in motion.
- This study provides foundational evidence for early-stage visual processing of biological motion and form disruptions.
- Findings support further research into neurocognitive development of human motion perception in infancy.
Abstract:
Five-month-old infants viewed point-light displays depicting the human actions of walking, kicking, throwing, and running. These actions were presented as upright canonical displays and spatially scrambled displays in which the global form of the action was disrupted. Significant differences were observed between event-related potential (ERP) waveforms to the canonical and scrambled displays at mid-parietal, lateral parietal, temporal, and occipital electrode sites. These differences were clearest at lateral parietal electrode sites (P7 and P8) where the scrambled stimuli elicited a more positive waveform than the canonical stimuli. The findings represent initial neurophysiological evidence that infants in the first half year of life are sensitive to disruptions in the human form, and provide a basis for further work on the neurocognitive developments associated with changes in young infants' perception of human motion.
