Infant Visual Attention and Stimulus Repetition Effects on Object Recognition

This study examined behavioral, heart rate (HR), and event-related potential (ERP) correlates of attention and recognition memory for 4.5-, 6-, and 7.5-month-old infants (N = 45) during stimulus encoding. Attention was utilized as an independent variable using HR measures. The Nc ERP component assoc...

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Bibliographic Details
Published in:Child development 2019-07, Vol.90 (4), p.1027-1042
Main Authors: Reynolds, Greg D., Richards, John E.
Format: Article
Language:English
Subjects:
Acknowledgment
Attention
Attention - physiology
Brain Waves - physiology
Child Development - physiology
EMPIRICAL ARTICLES
Encoding
Event-related potentials
Evoked Potentials - physiology
Female
Heart rate
Heart Rate - physiology
Humans
Infant
Infants
Male
Metabolism
Pattern recognition
Pattern Recognition, Visual - physiology
Recognition (Psychology)
Recognition memory
Recognition, Psychology - physiology
Repetition
Stimulus
Visual attention
Visual Perception
Visual Stimuli
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Summary:This study examined behavioral, heart rate (HR), and event-related potential (ERP) correlates of attention and recognition memory for 4.5-, 6-, and 7.5-month-old infants (N = 45) during stimulus encoding. Attention was utilized as an independent variable using HR measures. The Nc ERP component associated with attention and the late slow wave (LSW) associated with recognition memory were analyzed. The 7.5-month-olds demonstrated a significant reduction in Nc amplitude with stimulus repetition. This reduction in Nc was not found for younger infants. Additionally, infants only demonstrated differential LSW amplitude based on stimulus type on attentive trials as defined by HR changes. These findings indicate that from 4.5 to 7.5 months, infants' attentional engagement is influenced by an increasingly broader range of stimulus characteristics.
ISSN:0009-3920
1467-8624
DOI:10.1111/cdev.12982