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Updated: Sep 10, 2025

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Altered Basal Ganglia Network Topology Associated With Auditory-Motor Synchronization.

Stéphanie K Lavigne1,2, Jonathan H Burdette3, Mohsen Bahrami3

  • 1Music and Health Science Research Collaboratory, Faculty of Music, University of Toronto, Toronto, Ontario, Canada.

Brain and Behavior
|August 27, 2025
PubMed
Summary
This summary is machine-generated.

Auditory-motor synchronization (AMS) enhances basal ganglia network (BGN) efficiency and synchronization, offering a potential mechanism for treating neurologic disorders like Parkinson's disease (PD). This rhythmic auditory stimulation (RAS) improves motor function by optimizing brain network topology.

Keywords:
BOLD fMRIauditory–motor synchronizationbasal ganglia networkbrain connectivitybrain networksgraph theory

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Area of Science:

  • Neuroscience
  • Brain Network Science
  • Motor Control

Background:

  • Auditory-motor synchronization (AMS) via Rhythmic Auditory Stimulation (RAS) improves motor function in neurologic disorders.
  • AMS may reduce dopaminergic (DA) reliance in the ventral striatum.
  • Mechanistic understanding of AMS's clinical benefits requires investigation into brain network dynamics.

Purpose of the Study:

  • To investigate the effects of AMS on the basal ganglia network (BGN) topology and function.
  • To explore how AMS influences network efficiency and connectivity within the BGN.
  • To provide mechanistic insights into AMS's therapeutic potential for neurologic conditions.

Main Methods:

  • fMRI scans of 14 healthy adults performing self-paced and synchronized finger tapping tasks at 1 Hz.
  • Modularity analysis to assess BGN spatial consistency.
  • Mixed-effects regression to evaluate changes in global and local network efficiency.

Main Results:

  • The BGN community showed significantly greater spatial consistency during the synchronized task compared to the self-paced task.
  • A significant increase in BGN efficiency was observed during the synchronized task.
  • AMS led to stronger and more probable connections between highly efficient nodes, indicating enhanced BGN synchronization.

Conclusions:

  • AMS significantly alters BGN network topology, increasing functional synchronization.
  • Enhanced network efficiency is a key factor in AMS-induced BGN synchronization.
  • These findings elucidate the neural mechanisms underlying AMS efficacy for treating motor deficits in neurologic disorders like PD.