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Updated: Feb 28, 2026
Exploring Cognitive Functions in Babies, Children & Adults with Near Infrared Spectroscopy
Published on: July 28, 2009
Prefrontal Activation During Executive Tasks Emerges Over Early Childhood: Evidence From Functional Near Infrared
Elizabeth Smith1, Afrouz Anderson1, Audrey Thurm2
1a Department of Human Development , National Institute of Child Health and Human Development , Bethesda , Maryland.
Insights
Functional Near Infrared Spectroscopy (fNIRS) reveals brain development in children. As children aged and improved task performance, prefrontal cortex activation increased during executive function tasks.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Science
Background:
- Executive functions, such as response inhibition and working memory, are crucial cognitive skills that develop throughout childhood.
- Investigating the neural underpinnings of executive function development in children is essential for understanding typical and atypical development.
- Functional Near Infrared Spectroscopy (fNIRS) offers a non-invasive method for studying brain activity in pediatric populations.
Purpose of the Study:
- To examine the neural correlates of executive function development in children using fNIRS.
- To investigate how brain activation patterns change with age during response inhibition and working memory tasks.
- To explore the relationship between task performance, age, and prefrontal cortex maturation.
Main Methods:
- Children aged 4-10 years participated in the study.
- Functional Near Infrared Spectroscopy (fNIRS) was employed to measure brain activity.
- Participants completed tasks assessing response inhibition and working memory.
Main Results:
- Both response inhibition and working memory tasks elicited changes in oxyhemoglobin and deoxyhemoglobin levels, indicative of neural activation.
- The strength of brain activation in response to the tasks increased with chronological age.
- Improved performance on the executive function tasks correlated with greater neural activation.
Conclusions:
- These findings demonstrate a clear link between the maturation of executive functions and the development of the prefrontal cortex in children.
- fNIRS is a valuable tool for studying the neural basis of cognitive development in young children.
- The study provides evidence for age-related changes in prefrontal cortex function during the development of executive functions.
Abstract:
Functional Near Infrared Spectroscopy (fNIRS) is a brain imaging technique that is well-suited for use in young children, making it particularly useful for investigating the neural bases of the development of executive functions. In the present study, children (ages 4-10) underwent fNIRS while completing response inhibition and working memory tasks. While both tasks were associated with increases in oxyhemoglobin and decreases in deoxyhemoglobin, we found that strength of activation increased with age and with improvements in task performance. These findings support the relation between emerging executive functions and maturation of the prefrontal cortex.
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