控制状态之间的过渡速度较慢导致认知灵活性在寿命中减少
bioRxiv : the preprint server for biology
|September 5, 2025
概括
老年人由于认知控制状态之间的过渡速度较慢而表现出认知不灵活性. 这种与年龄相关的减速会影响目标快速变化时的任务表现,
科学领域:
- 认知神经科学
- 老年学
- 计算心理学
背景情况:
- 老龄化与认知能力下降有关,
- 认知灵活性,即改变心理状态的能力, 对于老年人来说至关重要,
- 与年龄相关的认知不灵活性可能源于认知控制配置的变化.
研究的目的:
- 研究与衰老相关的认知不灵活性的动态系统模型.
- 确定认知控制状态之间的缓慢过渡是否有助于与年龄相关的不灵活性.
- 测试老年人认知灵活性下降的三种潜在原因:能力,适应范围和转变速度.
主要方法:
- 参与者在整个生命周期中执行了具有不同绩效目标的认知任务.
- 计算模型用于测量认知控制配置的动态变化.
- 评估了与年龄相关的控制能力,调整范围和转变速度的差异.
主要成果:
- 老年人的认知不灵活性主要与对照状态之间的过渡速度较慢有关.
- 年龄没有显著影响控制能力或控制调整范围.
- 如果目标经常发生变化, 老年人转变的速度会慢,
结论:
- 认知控制状态过渡的减缓是与年龄相关的认知不灵活的关键机制.
- 认知动态,特别是转变速度,对于理解认知衰老至关重要.
- 这些发现强调了动态过程对静态能力减少在解释老年人的认知变化的重要性.
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