与年龄相关的神经变化是音乐序列的长期识别的基础
Leonardo Bonetti1,2,3, Gemma Fernández-Rubio4, Massimo Lumaca4
1Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music, Aarhus/Aalborg, Aarhus, Denmark. leonardo.bonetti@psych.ox.ac.uk.
Communications biology
|August 29, 2024
概括
年龄较大的成年人.
科学领域:
- 神经科学是一个神经科学.
- 认知老龄化 认知老龄化
- 听觉感知是一种听觉感知.
背景情况:
- 老龄化通常与认知功能减少有关,包括大脑处理和预测.
- 现有的理论表明,补偿性神经机制可能在老年大脑中起作用.
研究的目的:
- 在听觉序列识别过程中调查大脑活动和功能组织的与年龄相关的差异.
- 挑战随着年龄的增长而发生的普遍认知衰退的概念.
主要方法:
- 磁脑成像 (MEG) 和磁共振成像 (MRI) 用于记录整个大脑的活动.
- 39名老年人 (60岁以上) 和37名年轻人 (18-25岁) 参与了调查.
- 参与者识别了以前记住的和新的音乐序列.
主要成果:
- 老年人在识别记住的序列时,早期感官活动 (听觉皮层) 增加,中叶和前额叶区域的活动中等程度下降.
- 在处理新序列时,老年人表现出高阶大脑区域 (海马体,前额叶皮层) 的活动减少.
- 年轻的成年人在识别新奇的序列方面表现优于老年人,但对记忆的序列的表现类似.
结论:
- 衰老重塑了功能性大脑组织,记忆与新闻听觉序列的不同模式.
- 预测和记忆过程中的与年龄相关的神经变化是显而易见的,支持非病理衰老中的补偿机制.
- 老龄化中的认知表现依赖于序列,保留对熟悉信息的识别.
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