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Corticospinal Excitability Modulation During Action Observation
Published on: December 31, 2013
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Developmental Differences in Cortical Activation During Action Observation, Action Execution and Interpersonal
Wan-Chun Su1,2, McKenzie L Culotta1,2, Michael D Hoffman1
1Department of Physical Therapy, University of Delaware, Newark, DE, United States.
Frontiers in Human Neuroscience
|March 21, 2020
Summary
Children exhibit less accurate interpersonal synchrony (IPS) than adults, with distinct brain activation patterns. This study uses functional near-infrared spectroscopy (fNIRS) to explore neural mechanisms of IPS in development.
Area of Science:
- Neuroscience
- Developmental Psychology
- Social Cognition
Background:
- Interpersonal synchrony (IPS) is crucial for social cognitive development.
- Limited research exists on developmental differences and neural underpinnings of IPS.
- Functional near-infrared spectroscopy (fNIRS) enables neuroimaging during natural movements.
Purpose of the Study:
- To compare cortical activation patterns in children and adults during action observation, execution, and IPS.
- To investigate developmental differences in interpersonal synchrony.
- To establish a neuroimaging framework for studying IPS impairments.
Main Methods:
- Utilized fNIRS to measure cortical activation in bilateral inferior frontal gyrus (IFG), superior temporal sulcus (STS), and inferior parietal lobes (IPL).
- Compared 17 school-age children and 15 adults performing a reach-to-cleanup task.
- Analyzed brain activity during action observation, execution, and IPS.
Main Results:
- Children demonstrated lower spatial and temporal accuracy in IPS compared to adults.
- STS regions showed higher activation during action observation; IFG and STS were more active during execution and IPS.
- IPS involved greater right-sided activation than execution, suggesting a higher-order process.
- Adults exhibited more left-lateralized brain activity than children during movement, indicating greater cortical inhibition.
Conclusions:
- Developmental differences in IPS accuracy and neural activation patterns exist between children and adults.
- IPS engages distinct and more bilateral cortical networks compared to simple action execution.
- Findings offer a neuroimaging approach for understanding social-cognitive deficits, such as in Autism Spectrum Disorder.
