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Related Experiment Video

Updated: Sep 21, 2025

Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
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EEG Microstate-Specific Functional Connectivity and Stroke-Related Alterations in Brain Dynamics.

Zexuan Hao1, Xiaoxue Zhai2, Dandan Cheng2

  • 1Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, China.

Frontiers in Neuroscience
|June 1, 2022
PubMed
Summary

Brain microstate dynamics differ in stroke patients, showing altered functional connectivity. These changes are state-selective and correlate with motor function, offering insights into stroke recovery and potential treatments.

Keywords:
EEGbrain dynamicsfunctional connectivitylower extremity motor functionmachine learningmicrostatesstroke

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Area of Science:

  • Neuroscience
  • Brain Dynamics
  • Computational Psychiatry

Background:

  • The brain functions as a complex, dynamic information processing system involving large-scale network coordination.
  • Neural mechanisms of brain states and the impact of brain injury on dynamics are not fully understood.

Purpose of the Study:

  • To investigate differences in microstate dynamics and functional connectivity between subacute stroke patients and healthy individuals.
  • To explore correlations between microstate features and behavioral outcomes in stroke patients.

Main Methods:

  • Utilized a microstate-based method on resting-state electroencephalography (EEG) data.
  • Analyzed functional connectivity patterns associated with distinct microstate classes.
  • Developed support vector machine (SVM) models using microstate features for patient-control discrimination.

Main Results:

  • Each microstate class exhibited a unique, consistent functional connectivity pattern.
  • Stroke patients showed diminished but retained connectivity patterns and significant alterations in microstate parameters (A, B, C).
  • Microstate features achieved moderate discrimination between stroke patients and controls, with negative correlations to motor scores.

Conclusions:

  • Stroke-induced changes in brain microstate dynamics are state-selective and linked to functional reconfiguration.
  • Findings provide insights into neural mechanisms of microstates, stroke-related brain alterations, and potential therapeutic targets.