皮层-海马体相互作用是老年人的模式支持记忆编码的基础
Shenyang Huang1, Paul C Bogdan1, Cortney M Howard1
1Department of Psychology and Neuroscience, Duke University, 417 Chapel Dr, Durham 27708 NC, United States.
Cerebral cortex (New York, N.Y. : 1991)
|August 12, 2025
概括
老年人 (OA) 在使用图表时表现出改善的情节性记忆,特别是在使用角性环-海马路径时. 这突出了与年龄相关的差异,即利用语义知识来进行记忆编码.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 老年学是一门学科.
背景情况:
- 情节性记忆通常随着年龄的增长而下降,但语义知识,就像模式一样,可以减轻这种缺陷.
- 图表一致性增强记忆力,在老年人 (OA) 中观察到的效果更大.
- 之前的神经成像研究将该方案的使用与腹中前额叶皮质 (vmPFC),角环 (AG) 和海马体 (HPC) 联系起来,主要是在年轻人 (YA) 中.
研究的目的:
- 调查神经机制,通过该方案增强OAS的情节性记忆.
- 为了比较在OAs和YAs中的模式引导记忆编码期间的皮层-海马体相互作用.
主要方法:
- 功能磁共振成像 (fMRI) 用于检查在编码场景对象对的不同模式一致性期间的大脑活动.
- 参与者包括老年人 (OA) 和年轻人 (YA).
- 编码对象的内存在第二天进行了测试.
主要成果:
- 方案一致性在YA和OA中显著增强了对象内存,在OA中更有实质性的影响.
- 在编码过程中的vmPFC-HPC相互作用预测了两个年龄组对一致对象的增强记忆.
- 一个AG-HPC交互是独特的与增强的OAs对象在OAs对象的记忆相关,这表明更大的依赖语义知识.
结论:
- 模式通过不同的皮质-海马体相互作用来增强情节性记忆编码,这些相互作用在年龄组之间存在差异.
- OA利用特定的神经通路,包括AG-HPC交互,以利用语义知识来增强记忆.
- 研究结果揭示了模式引导的情节性记忆的神经基础中的与年龄相关的差异.
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