情景记忆成功年老化的神经机制
Neural mechanisms of successful episodic memory aging
查看参考文献109篇
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文摘
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随着年龄的增长,大部分老年人的情景记忆会出现衰退,但也会有一部分老年人的情景记忆表现出成功的年老化,即记忆成绩较好或随增龄的衰退程度较小。脑保持理论、神经去分化理论、认知储备理论以及神经补偿理论分别从不同角度解释了情景记忆成功年老化的神经机制。基于选择性优化与补偿模型对现有理论进行整合,发现情景记忆成功年老化可能与个体的认知储备水平直接相关:高认知储备的老年人能够对情景记忆相关的脑区和脑网络进行优化且具备更强的神经补偿能力,因而其脑功能(比如,神经表征和神经加工通路的特异性)可能会保持地更好。未来研究需要更多地采用纵向设计来考察各理论之间的关系及其影响因素,从而更好地解释记忆成功年老化的神经机制并为提升老年人的脑与认知健康提供支持。 |
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其他语种文摘
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Healthy aging is generally associated with a decline in episodic memory. However, older adults demonstrate notable individual differences in episodic memory. While most older adults show a normal or pathological decline in episodic memory, some indicate successful episodic memory aging. It is essential to investigate the neural mechanisms of individual differences in episodic memory aging to demystify the determinants of successful memory aging. To date, four critical theories have been proposed to explain why some older adults exhibit successful memory aging: brain maintenance, neural dedifferentiation, cognitive reserve, and neural compensation. Based on these theories and the SOC model, we speculate that some older adults display successful memory aging because they have higher cognitive reserve shaped by several lifestyle factors throughout their lifespans. Older adults with higher cognitive reserve can optimize the function of the brain regions and networks related to episodic memory and more successfully compensate for age-related neural decline. Ultimately, the benefits of the optimization and compensation processes are reflected in maintaining a higher level of brain function (e.g., the fidelity of neural representation or functional segregation of brain networks). Future research should incorporate more longitudinal studies to investigate the relationship between these theories and their impact factors, which would be beneficial for understanding the neural mechanisms of successful memory aging and providing support for improving brain and cognitive health in older adults. |
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来源
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心理科学进展
,2022,30(10):2254-2268 【核心库】
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DOI
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10.3724/SP.J.1042.2022.02254
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关键词
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情景记忆
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成功年老化
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脑保持
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神经去分化
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认知储备
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神经补偿
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地址
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1.
中国科学院心理研究所, 中国科学院心理健康重点实验室, 北京, 100101
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中国科学院大学心理学系, 北京, 100049
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中国儿童中心, 北京, 100035
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1671-3710 |
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学科
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社会科学总论 |
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基金
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国家重点研发计划
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国家自然科学基金
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中国科学院青年创新促进会项目
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文献收藏号
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CSCD:7309375
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