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2000
Volume 21, Issue 1
  • ISSN: 1573-4056
  • E-ISSN: 1875-6603
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Abstract

Background

The basal ganglia area is a frequent site of stroke, which commonly causes intricate functional impairments. This study aims to uncover disparities in static and dynamic functional connectivity (FC) of the brain in patients afflicted with left-sided basal ganglia stroke (L-BGS) and right-sided basal ganglia region stroke (R-BGS), furthermore scrutinising the mechanism behind the lateralisation of the stroke.

Methods

A total of 23 patients with L-BGS and 20 patients with R-BGS were recruited, alongside 20 healthy control subjects. Resting-state functional magnetic resonance imaging and sliding window techniques were employed to conduct static and dynamic FC analyses on both patient groups and controls, which can enable a more refined evaluation of the variations in neural signals.

Results

The inter-network connectivity analysis showed significant changes only in the L-BGS patient group ( 0.05). The R-BGS group showed increased connectivity in the auditory and posterior visual networks, while the L-BGS group showed reduced connectivity. In dynamic connectivity analyses, the L-BGS group exhibited greater positive network connectivity reorganization.

Conclusion

Within one month of stroke onset, the L-BGS group showed a more pronounced impairment of inter-network connectivity, alongside enhanced FC compensatory changes of a positive nature. Differential changes in the two patient groups may provide useful information for individualized rehabilitation strategies.

© 2025 The Author(s).
© 2025 The Author(s). Published by Bentham Science Publishers. This is an open access article published under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/legalcode
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Left Basal Ganglia Stroke-induced more Alterations of Functional Connectivity: Evidence from an fMRI Study
Curr. Med. Imaging 21, E15734056344477 (2025); https://doi.org/10.2174/0115734056344477250222060225
/content/journals/cmir/10.2174/0115734056344477250222060225
/content/journals/cmir/10.2174/0115734056344477250222060225
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  • Article Type:     Research Article
Keyword(s): Basal ganglia injury; Dynamic functional connectivity; Dynamic functional network connectivity; Ischemic stroke; Resting-state functional magnetic resonance imaging; Sliding window analysis

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