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Related Experiment Video

Updated: Mar 20, 2026

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Published on: March 21, 2019

Characterizing dynamic local functional connectivity in the human brain.

Lifu Deng¹, Junfeng Sun¹, Lin Cheng¹

¹School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China.

Scientific Reports

|May 28, 2016

Summary

This summary is machine-generated.

This study reveals that local brain connectivity dynamics, measured by regional homogeneity (ReHo), are intrinsically variable and linked to overall brain function. This variability changes during motor tasks, suggesting dynamic local functional connectivity is important.

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Area of Science:

Neuroscience
Cognitive Neuroscience
Brain Imaging

Background:

Functional connectivity (FC) from fMRI reveals brain organization.
Dynamic FC fluctuations offer insights into complex brain behavior.
Dynamics of local FC (within millimeters) remain understudied compared to long-range FC.

Purpose of the Study:

To explore the dynamics of local functional connectivity.
To investigate the relationship between local FC variability and global brain organization.
To examine changes in local FC dynamics during a motor task.

Main Methods:

Regional homogeneity (ReHo) was used to depict local FC.
The sliding windows method was applied to capture ReHo dynamics.
fMRI data from resting-state and a motor task were analyzed.

Main Results:

A positive correlation between ReHo and its temporal variability was observed, indicating an intrinsic brain feature.
Higher ReHo variability was found in brain regions with higher inter-regional FC centrality.
Coherence of ReHo fluctuations was greater within functional brain modules.
ReHo variability differed between resting-state and motor task conditions.

Conclusions:

Temporal fluctuations in local FC (ReHo) are intrinsically dynamic and linked to global brain organization.
Dynamic local FC plays a role in brain function and task-related activity.
This study opens avenues for investigating dynamic local functional connectivity.