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ORIGINAL RESEARCH article
Front. Aging Neurosci.
Sec. Neurocognitive Aging and Behavior
Volume 16 - 2024 |
doi: 10.3389/fnagi.2024.1408685
A comparative study of interhemispheric functional connectivity in patients with basal ganglia ischemic stroke
Provisionally accepted- Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi Zhuang Region, China
Background: Voxel-mirrored homotopic connectivity (VMHC) is utilized to assess the functional connectivity of neural networks by quantifying the similarity between corresponding regions in the bilateral hemispheres of the brain. The exploration of VMHC abnormalities in basal ganglia ischemic stroke (BGIS) patients across different cerebral hemispheres has been limited. This study seeks to establish a foundation for understanding the functional connectivity status of both brain hemispheres in BGIS patients through the utilization of VMHC analysis utilizing resting-state functional magnetic resonance imaging (rs-fMRI). Methods: This study examined a total of 38 patients with left basal ganglia ischemic stroke (LBGIS), 44 patients with right basal ganglia ischemic stroke (RBGIS), and 41 individuals in a healthy control (HC) group. Rs-fMRI studies were performed on these patients, and the pre-processed rs-fMRI data were analyzed using VMHC method. Subsequently, the VMHC values were compared between three groups using a one-way ANOVA and post hoc analysis. Correlation analysis with clinical scales was also conducted.The results indicated that compared to the HC group, significant differences were detected in postcentral gyrus, extending to precentral gyrus in both BGIS groups. Post hoc analysis showed that in the pairwise ROI-based comparison, individuals with LBGIS and RBGIS exhibited reduced VMHC values compared to HC groups. There was no significant difference between the LBGIS and RBGIS groups. In the LBGIS group, the VMHC value showed a negative correlation with NIHSS and a positive correlation with BI.The analysis of VMHC in rs-fMRI revealed a pattern of brain functional remodeling in patients with unilateral BGIS, marked by reduced synchronization and coordination between hemispheres. This may contribute to the understanding of the neurological mechanisms underlying motor dysfunction in these patients.
Keywords: Voxel-mirrored homotopic connectivity, functional connectivity, basal ganglia ischemic stroke, resting-state functional magnetic resonance imaging, Stroke
Received: 28 Mar 2024; Accepted: 04 Sep 2024.
Copyright: © 2024 Zhang, Chen, Liang, Quan, Liu and Liang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Shijian Chen, Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China
Huo Liang, Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China
Yayuan Liu, Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China
Zhijian Liang, Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China
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