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未来的记忆性能和其静止状态的功能连接性与患有记忆障碍的个体相关

Gulcan Ozturk¹, Emre Hari², Kardelen Yildirim²

¹Department of Neuroscience, Aziz Sancar Institute of Experimental Medicine, Istanbul University, 34093, Istanbul, Turkey.

Neuropsychologia

|January 24, 2025

概括

潜在记忆 (PM) 衰退与记忆障碍患者的特定大脑连接变化有关. 早期的氨基粉症可能会通过增加的连接性来补偿,突出PM.

科学领域:

神经科学是一个神经科学.
认知神经学认知神经学
神经成像是一种神经成像.

背景情况:

预期记忆 (PM) 对日常运作至关重要.
在有记忆障碍但没有痴呆症 (PWD) 的人群中,早期发现PM损伤至关重要.
休息状态功能连接 (rsFC) 可能作为早期认知变化的神经成像标志物.

研究的目的:

调查PWD中的潜在记忆 (PM) 性能.
为了识别与PM损伤相关的rsFC的变化.
探索PM,rsFC和脑脊液 (CSF) 生物标志物之间的关系.

主要方法:

60名PWD被评估使用意图的记忆选测试和虚拟周.
rsFC使用基于网络的统计 (NBS) 分析了PM得分作为回归器.
为了进行比较分析,参与者被分为高PM和低PM组 (HPMG,LPMG).

主要成果:

与HPMG相比,LPMG在基于事件和基于时间的PM任务中表现出显著的缺陷,而基于事件的任务显示出更大的损害.
中额前环 (MFG),上边环 (SMG) 和前环皮质 (ACC) 被确定为PM的关键区域.
HPMG表现出更高的连接性和性能,但CSF Aβ42水平较低,这表明认知储备补偿.

结论:

在PWD中明显出现PM损伤,并且与MFG,SMG和ACC的特定rsFC变化有关.
自发的认知过程在先进的PM损伤中更容易受到影响.
认知储备最初可能通过增强大脑连接来弥补与粉样性腺相关的变化.

关键词:

阿尔茨海默氏症的疾病是阿尔茨海默氏症.认知储备是一种认知储备.轻度认知障碍轻度认知障碍未来的记忆未来的记忆休息状态的功能连接.主观认知障碍是一种主观认知障碍.

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