期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
慢性中风的皮质间耦联与康复的相关性研究
1
作者 Strens L.H.A. Asselman p. +2 位作者 pogosyanA. p. brown 张玉龙 《世界核心医学期刊文摘(神经病学分册)》 2005年第1期49-49,共1页
Background: The mechanisms behind motor recovery from stroke are not clearly understood. Functional imaging studies have demonstrated task related brain activation in several motor areas, but few studies have attempte... Background: The mechanisms behind motor recovery from stroke are not clearly understood. Functional imaging studies have demonstrated task related brain activation in several motor areas, but few studies have attempted to correlate this with stroke outcome. Moreover, these studies have focused on how motor areas may individually contribute to compensation. Here, the authors investigate whether different cortical areas interact to form dynamic assemblies that may then compensate for disability. Metho ds: The authors investigated corticocortical coherence in 16 healthy subjects and 25 patients with chronic stroke involving one cerebral hemisphere and having varying degrees of motor recovery. Scalp EEG was recorded at rest and while right handed subjects performed a unimanual grip task. The degree of functional recovery after stroke was assessed using a range of outcome measures. Results: Compared with healthy subjects, hand related asymmetries in task related EEG EEG coherence were increased between mesial and lateral frontal regions of the affected hemisphere, over mesial frontal regions, and over lateral frontal areas of the unaffected hemisphere when patients with stroke gripped with their affected hand. Mesial hand related asymmetries in task related power and coherence were negatively correlated with recovery. Conclusion: Increases in task related coupling between cortical areas may dynamically compensate for brain damage after stroke. Some of this increased coupling, particularly that over mesial frontal areas, decreases as patients make a functional recovery. 展开更多
关键词 耦联 额区 功能影像学 功能恢复 健康受试者 大脑半球 不对称性 右利手 动态联系 运动区
下载PDF
苍白球局部场振荡电位活动性与肌张力障碍患者非随意肌EMG的关系
2
作者 Kühn A.A. Hoffmann K.-T. +1 位作者 p. brown 牛亚利 《世界核心医学期刊文摘(神经病学分册)》 2006年第9期7-8,共2页
The pathophysiology of dystonia is unclear. The authors recorded local field potentials (LFPs) from deep brain stimulation electrodes implanted in the pallidum of 13 dystonic patients. LFP power correlated with the le... The pathophysiology of dystonia is unclear. The authors recorded local field potentials (LFPs) from deep brain stimulation electrodes implanted in the pallidum of 13 dystonic patients. LFP power correlated with the level of dystonic EMG in the sternocleidomastoid, with maximal positive correlations at the lower contacts of pallidal electrodes. The data suggest that the neuronal synchronization indexed by LFP oscillations in the globus pallidus may be mechanistically linked to dystonic EMG activity. 展开更多
关键词 肌张力障碍 振荡电位 苍白球 EMG 活动性 病理生理学机制 刺激电极 胸锁乳突肌
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部