河马回路和视觉记忆功能的功能连接在患有围产中风的儿童和青少年中的功能连接
Armaan Dhanoa1,2, Nomazulu Dlamini3, John Andersen4
1Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Human brain mapping
|September 8, 2025
概括
这项研究揭示了围产中风儿童的海马功能连接 (FC) 发生变化,将这些大脑网络差异与视觉记忆缺陷联系起来. 这些发现表明神经可塑性的潜力,并为早期脑损伤提供新的康复策略.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 儿科神经学 儿科神经学
背景情况:
- 围产期中风是半性脑 (HCP) 的常见原因,可能导致运动缺陷和神经心理障碍,包括记忆问题.
- 河马回路内的功能连接 (FC) 对典型发育个体和中风后的成年人记忆至关重要,但其在围产中风中的作用未得到充分研究.
- 了解围产性中风中的视觉记忆功能对于预后和开发个性化认知康复至关重要.
研究的目的:
- 在患有围产性中风的儿童和青少年中量化海马功能连接 (FC).
- 在这个人群中调查海马FC和视觉记忆功能之间的关联.
- 探索中风类型 (动脉缺血性中风/AIS,周周静脉梗塞/PVI) 和半球之间的FC差异.
主要方法:
- 休息状态fMRI数据是从患有单边围产中风 (AIS,PVI) 和典型发育对照 (TDC) 的儿童和青少年获得的.
- 使用CONN工具箱计算双边海马和其他与记忆相关的大脑区域之间的FC.
- 在一组中风参与者中,使用中枢神经系统生命体征 (CNSVS) 电池评估视觉记忆功能.
主要成果:
- 在所有组中都观察到海马FC的半球差异.
- 患有左侧围产中风的儿童在受损半球与非受损侧面相比,在海马和侧面前额皮质之间增加了FC.
- 典型的发展对照表现出较高的海马FC比中风组的损伤半球;右半球中风与海马FC和视觉记忆有关.
结论:
- 围产期中风改变了儿童和青少年双边海马功能连接.
- 观察到的FC差异与视觉记忆功能有关,特别是在右半球中风中.
- 这些发现表明非受损海马体的发育可塑性的潜力,并为了解早期脑损伤后的视觉记忆缺陷提供了见解.
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