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This is a Quantitative Study study.

September 28, 2025Developmental PsychobiologyOpen Access

Social Smiling and Laughter Are Linked to Enhanced Functional Brain Connectivity in Young Infants’ Default Mode Network

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Infants displaying higher levels of smiling and laughter during interactions showed better functional connectivity in the left hemisphere of the default mode network.
Neuroimaging revealed more functional connectivity in the right hemisphere of the default mode network, indicating hemispheric differences in connectivity development.
The study included 109 infants, with 35 as the final analyzed sample, contributing nuanced insights into early brain development.
Findings suggest links between individual differences in social engagement and the functional organization of brain networks associated with cognitive and social functions.

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Implication

Functional connectivity increases in the left hemisphere of the default mode network associated with social engagement in infants, suggesting developmental implications.

Cite This Study

Allison et al. (2025) studied this question.

synapsesocial.com/papers/68d9052541e1c178a14f5423 https://doi.org/10.1002/dev.70088

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Implication

Functional connectivity increases in the left hemisphere of the default mode network associated with social engagement in infants, suggesting developmental implications.

Social Smiling and Laughter Are Linked to Enhanced Functional Brain Connectivity in Young Infants’ Default Mode Network

Key Points

Discussion

Implication

Cite This Study

Social Smiling and Laughter Are Linked to Enhanced Functional Brain Connectivity in Young Infants’ Default Mode Network

Key Points

Discussion

Implication

Cite This Study

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