时间脑结构支持整个成年人一生的句子处理
Nicholas Riccardi1, Alex Teghipco1, Ida Rangus1,2
1Department of Communication Sciences and Disorders, University of South Carolina, Columbia, SC, United States.
Imaging neuroscience (Cambridge, Mass.)
|November 17, 2025
概括
老年人表现出复杂句子理解能力的下降. 大脑的结构和功能在 temporoparietal 区域调解与年龄相关的变化处理复杂的句子,独立于记忆能力.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 心理语言学 心理语言学
背景情况:
- 老年人经常经历复杂句子理解的下降.
- 与年龄相关的句子处理变化背后的神经机制尚未完全理解.
- 研究大脑结构,功能和记忆之间的相互作用对于理解认知衰老至关重要.
研究的目的:
- 研究成年人一生中记忆能力和句子处理的神经相关性.
- 确定大脑结构和功能如何调解复杂句子理解中与年龄相关的变化.
- 检查年龄对处理正规与非正规句子结构的不同影响.
主要方法:
- 利用一种新的神经成像方法与基于区域的调解统计数据.
- 招募了187名20-80岁的神经完整的成年人.
- 使用NIH认知工具箱任务评估工作和听觉 - 语言短期记忆.
- 测量阅读句子处理使用自律阅读任务与相对对象 (非正规) 和相对主体 (正规) 的句子.
主要成果:
- 记忆能力调解了年龄和整体句子理解之间的关系.
- 年龄是影响句子处理速度的主要因素,比记忆能力更重要.
- 在后/下垂体区域的双边灰质体积 (GMV) 和左SMG低频波动的部分幅度 (pALFF) 介导了非正规和正规句子之间的与年龄相关的处理速度差异,独立于记忆容量.
结论:
- 在成年期,双边时脑区域对于处理复杂的语法结构至关重要.
- 这些大脑区域以部分独立于记忆能力的方式支持复杂的句子处理.
- 这些发现提供了关于认知衰老和语言处理的神经基础的见解.
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