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Related Experiment Video

Updated: May 16, 2025

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Induced zero-phase synchronization as a potential neural code for optimized visuomotor integration.

Kirstin-Friederike Heise1, Geneviève Albouy2, Nina Dolfen3

  • 1Movement Control and Neuroplasticity Research Group, Biomedical Sciences, KU Leuven, Belgium; KU Leuven Brain Institute, Leuven, Belgium; Integrative Neuromodulation and Recovery (iNR) Laboratory, Department of Health Sciences and Research, Medical University of South Carolina, Charleston, SC, USA.

Brain Stimulation
|March 31, 2025
PubMed
Summary
This summary is machine-generated.

Zero-phase entrainment of the sensorimotor mu-rhythm enhances visuomotor integration by optimizing internal models. This neural synchronization improves performance precision and simplifies force signals, supporting predictive coding.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Motor Control

Background:

  • Goal-directed behavior relies on integrating external sensory data with internal action-related information.
  • Internal models, or expectations, are formed from prior knowledge and updated via sensory feedback.
  • Predictive coding optimizes this integration, conferring a behavioral advantage during uncertainty.

Purpose of the Study:

  • To investigate how phase entrainment of the sensorimotor mu-rhythm influences visuomotor integration.
  • To explore the neural mechanisms underlying optimized information processing during action.

Main Methods:

  • Participants underwent transcranial alternating current stimulation over bilateral motor cortices (M1).
  • A visually-guided force adjustment task was performed during functional magnetic resonance imaging (fMRI).

Main Results:

  • Inter-hemispheric zero-phase entrainment modulated performance precision specifically for each effector.
  • A global reduction in force signal complexity was observed, linked to brain activity changes.
  • Increased functional connectivity was found between M1 and several brain regions, including the striatum.

Conclusions:

  • Zero-phase synchronization may represent a neural mechanism for optimizing information integration.
  • This process is crucial for updating internal models within the perception-action cycle.
  • Findings support the role of predictive coding in sensorimotor control.