老年人受到工作记忆编码过程中出现的分心因素的影响
Carlos D Carrasco1,2, Kevin T Jones2,3, Marian E Berryhill4
1Center for Mind & Brain, University of California, Davis, CA, USA.
Psychological research
|October 28, 2025
概括
老年人由于分心因素而经历工作记忆 (WM) 衰退. 在初始编码阶段的分心显著损害了老年人的WM性能,比维护期间更严重.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 人类衰老研究研究
背景情况:
- 工作记忆 (WM) 性能随着年龄的增长而下降,通常与对环境干扰因素的敏感性增加有关.
- 有效的WM依赖于在编码或维护期间抵抗干扰因素,但对老年人 (OA) 的干扰抑制能力的研究是混合的.
研究的目的:
- 调查老年人的工作记忆缺陷主要是由编码与维护期间遇到的分心因素驱动的.
- 为了检查分心特征 (熟悉性,突出性) 对老年人WM表现的影响.
主要方法:
- 与老年人进行了三项行为实验.
- 参与者在编码或维护阶段使用分心器执行WM任务.
- 干扰器的熟悉性和突出性被操纵.
主要成果:
- 与维护阶段相比,老年人对编码阶段呈现的分心因素的脆弱性明显更大.
- 干扰器熟悉对表现的影响很小.
- 在编码过程中,低度的干扰因素导致了精度的大幅降低和反应时间的增加.
结论:
- 在编码阶段的分心是导致老年人工作记忆障碍的一个关键因素.
- 干扰器的微妙性质并不能减轻它们对该群体WM编码的破坏性影响.
- 研究结果强调了在初始信息摄入过程中有效过的关键作用,以保持老化中的工作记忆.
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