动态重组与任务相关的网络互动在中风后失语恢复中
Zhizhao Jiang1,2,3, Philipp Kuhnke1,3, Anika Stockert2
1Max Planck Institute for Human Cognitive and Brain Sciences, 04103 Leipzig, Germany.
Brain : a journal of neurology
|January 30, 2025
概括
脑网络相互作用在中风后的失语症随着时间的推移而变化,并取决于中风的位置. 了解这些动态,特别是语言和多重需求网络之间的动态,有助于恢复和个性化康复策略.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 神经学 神经学
背景情况:
- 脑卒中后失言症涉及语言障碍和改变的大脑网络活动.
- 在失言症中语言恢复是异质的,受到自中风和病变位置以来的时间的影响.
- 在恢复过程中,语言网络和多重需求网络之间的相互作用尚未完全理解.
研究的目的:
- 在中风后失语症中,在语言处理过程中,在语言和多重需求网络之间进行与任务相关的功能互动.
- 研究这些相互作用如何随着时间的推移 (急性,亚急性,慢性阶段) 发生变化,并根据病变位置 (正面与角-双侧) 不同.
主要方法:
- 使用动态因果建模 (DCM) 的纵向功能神经成像研究.
- 听力句子理解范式,给左半球前部或部-部中风患者 (每组n=17) 和健康对照组 (n=17) 进行.
- 在中风后的急性,亚急性和慢性阶段重复评估.
主要成果:
- 在患者群体中观察到,从多重需求网络到语言网络的任务相关连接性增加.
- 从多重需求到语言网络的早期促进与后来的语言改进相关.
- 损伤位置影响了特定连接的招募:额头中风患者显示右侧前额叶皮层调节,而侧侧脑中风患者在慢性阶段整合了补充运动区域/背前带状皮层.
- 语言网络中的促进性连接在所有患者的亚急性阶段出现.
- 额头中风患者在急性阶段表现出右侧病变同类对左下额头皮质的促进作用.
结论:
- 在语言和多重需求网络内和跨越语言的功能互动对于失语恢复至关重要.
- 在恢复时间表中观察到的动态重组原则.
- 结果可能会为个性化的神经刺激治疗方案提供信息,以适应损伤位置和恢复阶段.
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