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Updated: Jul 26, 2025

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Cerebellar Regional Dissection for Molecular Analysis
Published on: December 5, 2020
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大脑小脑默与中脑波动和语音皮层的脱同步有关
Samuel S McAfee1, Giles Robinson2, Amar Gajjar2
1Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
Brain : a journal of neurology
|June 21, 2023
概括
大脑默综合征,后瘤切除后的言语障碍,涉及周水管灰色功能障碍. 随着语音恢复,与该区域的连接得到恢复,这表明它在疾病中的作用.
科学领域:
- 神经科学是一个神经科学.
- 神经成像是一种神经成像.
- 语言病理学 语音病理学
背景情况:
- 大脑默综合征 (CMS) 是一种复杂的疾病,影响言语,运动,并影响后后的瘤去除.
- 目前尚不完全了解CMS的致病性,尽管从状核到水管灰色区域的投射是有影响的.
- 对这些小脑突出的损伤的功能后果仍然不太清楚,特别是关于发言的运动系统.
研究的目的:
- 通过使用功能性MRI (fMRI) 对脑髓母细胞瘤患者的语言运动系统大脑区域的功能变化进行调查.
- 为了确定与小脑默综合征急性阶段相关的功能缺陷.
- 分析CMS恢复期间功能连接的时间演变.
主要方法:
- 分析了124名患有脑髓母细胞瘤的fMRI数据 (45名患有CMS,11名患有其他严重缺陷,68名无症状).
- 数据驱动的分片化用于定义语音运动控制区域内的功能节点.
- 在急性和恢复阶段估计节点之间的功能连接;测量信号分散在periaqueductal灰色和红色核.
主要成果:
- 在急性CMS中,有水管灰色 (PAG) 功能障碍的证据,其特征是异常波动和与新皮层语言节点的脱同步.
- PAG 功能连接性正常化了语音后恢复,显示了与左背侧前额叶皮层的连接性增加.
- 杏仁体在急性阶段表现出与新皮层节点的广泛超连接性;在各组之间观察到稳定,广泛的脑连接性差异.
结论:
- 语音运动系统的系统性变化,以控制发音的边缘区域为中心,在CMS患者中很明显.
- 在小脑损伤后的PAG功能障碍有助于CMS中短暂的非语言发作.
- 完整的大脑皮层突出可能在疾病的慢性特征中起作用.
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