工作内存中的序列顺序表示:空间问题还是时间问题?
Lucie Attout1, Robin Remouchamps2, Damien Lesenfants2
1Faculty of Psychology and Educational Science, University of Geneva, Geneva, Switzerland.
NeuroImage
|January 10, 2026
概括
大脑使用时间代码,在较小程度上使用空间代码,来表示口头工作记忆 (WM) 中的信息顺序. 这项研究使用fMRI来调查序列顺序如何编码.
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
背景情况:
- 序列顺序表示对于口头工作记忆 (WM) 是至关重要的.
- 在WM中串行序列编码的基础上的大脑机制尚未完全理解.
- 两个主要假设提出序列顺序信息的空间或时间编码.
研究的目的:
- 为了调查大脑是否使用空间或时间代码进行序列顺序信息在口头WM.
- 使用fMRI对比WM串行序列编码的空间和时间假设.
主要方法:
- 使用了功能磁共振成像 (fMRI).
- 参与者完成了一个隐式空间处理任务,一个隐式时间处理任务和一个口头WM任务.
- 分析了多变量神经活动模式.
主要成果:
- 在WM串行位置编码和时间处理任务时间点之间观察到共享的多变量神经活动模式.
- 左前部IPS中的神经活动区分了空间终点,并预测了WM串行位置信息.
- 结果支持隐式时间编码,在较小程度上,在口头WM中隐式空间编码.
结论:
- 这些发现表明,口头工作记忆利用时间和空间编码机制来表示串行顺序.
- 与空间编码相比,时间编码似乎是一个更主导的机制.
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