Method and system for analyzing coupling between brain and muscle function changes based on two-way delay compensation

The bidirectional delay-compensated brain-muscle function change coupling analysis method solves the problems of signal time misalignment and insufficient bidirectional delay estimation in traditional corticomuscular connectivity analysis. It achieves accurate quantification of corticomuscular conduction time and high-fidelity construction of functional connectivity networks, thereby improving the sensitivity and accuracy of brain-muscle function assessment.

CN121256283BActive Publication Date: 2026-03-24NANKAI UNIV +1
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Patent Information

Application Number
CN202511821150.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-05
Publication Date
2026-03-24
Estimated Expiration
2045-12-05

AI Technical Summary

Technical Problem

Traditional corticomuscular connectivity analysis does not perform delay compensation, resulting in signal time misalignment, which masks the true functional coupling and fails to effectively capture nonlinear interactions and dynamic changes. Furthermore, existing methods cannot simultaneously estimate bidirectional corticomuscular delays, affecting the sensitivity and accuracy of brain muscle function assessment.

Method used

A coupled analysis method for brain muscle function changes based on bidirectional delay compensation is adopted. By using a bidirectional cortical-muscular delay estimation algorithm, combined with transfer entropy and sliding window techniques, signal time alignment and compensation are performed to construct a directional cortical-muscular connectivity network and extract multi-dimensional evaluation features to quantify brain muscle function changes.

Benefits of technology

It achieves precise quantification and bidirectional separation of cortical-muscle conduction time, constructs a high-fidelity functional connectivity network, significantly improves the authenticity and intuitiveness of brain-muscle coupling analysis, provides a multi-dimensional assessment system, and offers a standardized tool for motor function assessment and neurorehabilitation research.

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Abstract

The application discloses a brain-muscle function change coupling analysis method based on bidirectional delay compensation, which comprises the following steps: designing an experiment paradigm, collecting signals and pre-processing the signals; determining a bidirectional cortical muscle delay estimation algorithm based on a sliding window and transfer entropy TE, and quantifying the conduction time of the EEG->EMG outgoing path and the EMG->EEG incoming path of the cortical muscle of a test person; performing signal time alignment compensation, calculating the transfer entropy with delay compensation and the average delay compensation transfer entropy, and constructing a directional delay compensation directional cortical muscle connection CMC network based on the transfer entropy with delay compensation and the average delay compensation transfer entropy; extracting evaluation features, and performing brain-muscle function change coupling analysis based on the evaluation features; and the evaluation features are extracted based on the dimensions of the CMC coupling strength, the hemispheric lateralization index and the correlation of the delay-motor function behavior index score based on conduction delay, hemispheric division and task stage. The application also discloses a corresponding system, an electronic device and a computer readable storage medium.
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