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Updated: Jul 4, 2026
06:37
Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
Published on: July 14, 2023
Functional connectivity between homotopic perisylvian regions correlates with functional status after stroke
Takamichi Tohyama1,2, Masaki Fukunaga2,3,4, Yohei Otaka5
1Department of Rehabilitation Medicine, School of Medicine, Fujita Health University, Toyoake, Japan.
Summary
Functional connectivity measured by fMRI shows significant associations with functional status after stroke. This brain connectivity may help predict functional independence and guide rehabilitation strategies.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Medical Imaging
Background:
- Assessing functional status in stroke rehabilitation is crucial for goal setting.
- Functional connectivity (FC) from fMRI may serve as a biomarker for post-stroke recovery.
- Understanding recovery and compensatory processes is key.
Purpose of the Study:
- To determine if FC correlates with functional status in stroke patients.
- To assess if FC can discriminate functional independence post-stroke.
Main Methods:
- Observational study of 58 stroke patients.
- Resting-state fMRI used to compute functional connectivity.
- Correlation and PCA analyses performed with functional independence measure (FIM) scores.
Main Results:
- Significant positive correlations found between FIM scores and interhemispheric connectivity in perisylvian regions.
- PCA identified a key connectivity component discriminating functional independence.
- Lesions were mainly subcortical.
Conclusions:
- Homotopic functional connectivity in perisylvian regions is associated with post-stroke daily functioning.
- fMRI-assessed interhemispheric functional connectivity offers insights into functional status.
- Findings support developing connectivity-based rehabilitation strategies.
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