记忆精度和年龄差异性地预测了整个生命周期的决策策略的使用情况
Sharon M Noh1, Umesh K Singla2,3, Ilana J Bennett4
1Department of Cognitive Sciences, The University of California, Irvine, Irvine, CA, USA. nohsm@uci.edu.
Scientific reports
|October 9, 2023
概括
老龄化通过改变记忆采样影响决策. 情节性记忆精度的下降会影响个人如何做出选择,老年人表现出更少的强化学习和更多的坚持.
科学领域:
- 认知神经科学 认知神经科学
- 衰老的神经科学 衰老的神经科学
- 计算精神病学是一种计算精神病学.
背景情况:
- 正常的衰老与记忆功能的下降有关,特别是情节性记忆.
- 衰老对决策过程的影响是复杂的,并未完全理解.
- 记忆采样是一种影响决策的拟议机制,与强化学习 (RL) 一起.
研究的目的:
- 调查与年龄相关的情节性记忆下降如何影响决策中的记忆采样.
- 测试这样的假设:记忆精度降低会影响记忆对选择的贡献.
主要方法:
- 一种混合计算模型被用来分析361名参与者 (18-77岁) 的奖励导向决策任务中的选择.
- 该任务包含了独特的试验记忆内容,以评估记忆采样.
- 一个单独的记忆任务评估了参与者的记忆精度.
主要成果:
- 记忆精度与记忆采样对决策的影响正相关.
- 年龄的增加与对强化学习 (RL) 的依赖减少以及对选择的坚持增加有关.
- 第二个实验证实了这些发现,并表明记忆精度与采样记忆的特异性有关.
结论:
- 决策的寿命差异与与年龄相关的记忆功能变化有关,特别是记忆精度.
- 旨在改善老龄化决策的干预措施可能受益于针对记忆精度和采样.
- 了解记忆和决策之间的相互作用为认知衰老提供了洞察力.
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