老年人前额叶功能中的个体差异与记忆和神经活动有关,对于自我相关和情绪内容
Ryan T Daley1,2, Holly J Bowen3, Eric C Fields2,4
1Department of Psychology, Gordon College, Wenham, Massachusetts, USA.
概括
老年人的额叶功能会影响自我相关信息的记忆,但不会影响情绪内容. 较高的额叶功能与减少记忆中的自我偏见有关,这表明自我相关性有助于记忆,特别是对于那些具有较低额叶功能的人来说.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 衰老研究研究 衰老研究
背景情况:
- 老年人经常表现出对自我相关和情感信息的增强记忆.
- 这些记忆效益存在个体差异,促使人们对潜在的神经机制进行调查.
- 额叶功能与在衰老过程中处理自我相关信息与情感信息之间的关系仍在争论中.
研究的目的:
- 调查前额叶 (FL) 功能是否与老年人的自我相关信息的处理与情感信息的处理类似.
- 根据认知功能来确定这些关系是否有分歧.
- 探索FL功能在记忆中对自我相关和情感内容的作用.
主要方法:
- 功能磁共振成像 (fMRI) 用于扫描60-88岁的参与者.
- 参与者看着物体 (积极的,消极的,中性的) 并想象把它们放在自己的家中或陌生人的家中.
- 认知电池评估了FL和中间叶功能,与记忆性能和神经活动相关.
主要成果:
- 额叶功能在行为上与自我相关内容的记忆有关,但与情感内容无关.
- 更高的FL功能与减少内存性能自我偏差相关.
- 在自我相关的处理过程中,中额头回环活动的增加与更高的FL功能有关.
结论:
- 支持增强记忆的认知功能,以提高自我相关性和情感相关性,在老年人中有所不同.
- 自我相关性作为一种记忆装置,特别有利于具有下额叶功能的老年人.
- 研究结果突出了记忆的独特神经支,用于与自我相关的信息与在衰老中充满情感的信息.
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