与年龄相关的认知灵活性下降和准备不足:来自任务状态网络分析的证据
Haishuo Xia1, Ting Li2, Yongqing Hou1
1Faculty of Psychology, Southwest University, Chongqing, China.
GeroScience
|March 22, 2024
概括
老年人表现出认知灵活性下降,原因是对任务切换的准备不足. 这种与年龄相关的认知灵活性下降与任务准备期间大脑网络活动的改变有关.
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:
- 行为研究表明,老年人认知灵活性下降.
- 在衰老中认知灵活性 (CFA) 的基础基于任务的网络机制尚未得到充分理解.
研究的目的:
- 通过检查认知切换任务期间的功能整合来研究衰老中认知灵活性的网络机制.
- 为了确定与任务准备和执行相关的大脑网络活动的年龄相关差异.
主要方法:
- 在字母-数字切换任务中分析了功能集成,区分了提示和目标阶段.
- 对年轻人和老年人之间的网络集成进行了比较.
主要成果:
- 两个年龄组都表现出从提示到目标阶段的功能整合下降.
- 与年轻人相比,老年人表现出功能整合 (更高的目标阶段整合) 的减少较小.
- 减少提示到目标的整合减少与老年人较差的任务表现相关.
结论:
- 随着年龄的增长,认知灵活性下降与认知切换过程中的准备不足和控制过程的改变有关.
- 老年人可能会在提示阶段预执行较少的控制过程,而在目标阶段执行更多的控制过程.
- 训练大脑网络功能和增加准备时间可能会提高老年人的认知灵活性.
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