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Abstract #4417

Location matters: Altered interhemispheric homotopic connectivity in post-stroke dyskinesia

Changjiang Zhao1,2, Haibo Xu1, Chengxin Yu2, Lei Gao1, Junlong Pan 2, Long Chen2, Can Zhang2, Jiangjin Chen2, Li Zhu2, Xiong Xiong2, and Xiance Zhao3
1Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China, 2Department of Radiology, The First College of Clinical Medical Science of China Three Gorges University, Yichang, China, 3Philips Healthcare, Shanghai, China

Synopsis

Keywords: Functional Connectivity, Stroke, functional connectivity

Motivation: How stroke at different locations affects homotopic connectivity remains incompletely understood.

Goal(s): This study aimed to examine how motor deficits resulting from acute stroke in different brain regions impact homotopic connectivity.

Approach: Patients with dyskinesia were included and divided into 4 demographically matched subgroups by stroke location: frontoparietal, radiation coronal, basal ganglia, and brain stem. Additional 37 matched healthy controls were also recruited. Interhemispheric homotopic functional and structural connectivity was obtained by resting-state functional MRI and diffusion tensor imaging.

Results: Our results suggest that post-stroke motor deficits in different regions implicate different links from cortical to subcortical areas.

Impact: Alterations in lesion topography and regional functional homotopy provide new insights into the understanding of neural basis of motor disorders and also inform potential individualized precisive targets.

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Keywords