当前位置: 首页 > 详情页

Dynamic functional reorganization of the motor execution network after stroke

| 导出 | |

文献详情

资源类型:
WOS体系:

收录情况: ◇ SCIE

机构: [1]State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, People’s Republic of China [2]Department of Radiology, Tianjin Medical University General Hospital, Tianjin 300052, People’s Republic of China [3]Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing 100053, People’s Republic of China [4]Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing 100053, People’s Republic of China [5]Department of Psychiatry, University of British Columbia, Vancouver, BC V6T 2A1, Canada
出处:
ISSN:

关键词: stroke network small-world connectivity functional magnetic resonance imaging

摘要:
Numerous studies argue that cortical reorganization may contribute to the restoration of motor function following stroke. However, the evolution of changes during the post-stroke reorganization has been little studied. This study sought to identify dynamic changes in the functional organization, particularly topological characteristics, of the motor execution network during the stroke recovery process. Ten patients (nine male and one female) with subcortical infarctions were assessed by neurological examination and scanned with resting-state functional magnetic resonance imaging across five consecutive time points in a single year. The motor execution network of each subject was constructed using a functional connectivity matrix between 21 brain regions and subsequently analysed using graph theoretical approaches. Dynamic changes in topological configuration of the network during the process of recovery were evaluated by a mixed model. We found that the motor execution network gradually shifted towards a random mode during the recovery process, which suggests that a less optimized reorganization is involved in regaining function in the affected limbs. Significantly increased regional centralities within the network were observed in the ipsilesional primary motor area and contralesional cerebellum, whereas the ipsilesional cerebellum showed decreased regional centrality. Functional connectivity to these brain regions demonstrated consistent alterations over time. Notably, these measures correlated with different clinical variables, which provided support that the findings may reflect the adaptive reorganization of the motor execution network in stroke patients. In conclusion, the study expands our understanding of the spectrum of changes occurring in the brain after stroke and provides a new avenue for investigating lesion-induced network plasticity.

基金:
语种:
高被引:
被引次数:
WOS:
PubmedID:
中科院(CAS)分区:
出版当年[2009]版:
大类 | 1 区 医学
小类 | 1 区 临床神经病学 2 区 神经科学
最新[2025]版:
大类 | 1 区 医学
小类 | 1 区 临床神经病学 1 区 神经科学
JCR分区:
出版当年[2008]版:
Q1 CLINICAL NEUROLOGY Q1 NEUROSCIENCES
最新[2023]版:
Q1 CLINICAL NEUROLOGY Q1 NEUROSCIENCES

影响因子: 最新[2023版] 最新五年平均 出版当年[2008版] 出版当年五年平均 出版前一年[2007版] 出版后一年[2009版]

第一作者:
第一作者机构: [1]State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, People’s Republic of China
共同第一作者:
通讯作者:
通讯机构: [1]State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, People’s Republic of China
推荐引用方式(GB/T 7714):
APA:
MLA:

资源点击量:17069 今日访问量:0 总访问量:916 更新日期:2025-04-01 建议使用谷歌、火狐浏览器 常见问题

版权所有©2020 首都医科大学宣武医院 技术支持:重庆聚合科技有限公司 地址:北京市西城区长椿街45号宣武医院