工作内存中的高效编码适应了环境的结构
Qiaoli Huang1, Christian F Doeller2
1Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig 04103, Germany.
Cell reports
|January 16, 2026
概括
大脑根据环境结构适应工作记忆 (WM) 编码策略,在一致的环境中提高性能. 这种神经灵活性优化了认知资源分配,以克服WM的局限性.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
背景情况:
- 工作内存 (WM) 的容量有限,需要有效的编码策略.
- 基于环境结构,大脑对WM表征的适应性组织还没有得到充分理解.
研究的目的:
- 为了研究大脑如何适应地组织工作记忆表示,以最大限度地提高编码效率.
- 检查环境结构对WM性能和神经机制的影响.
主要方法:
- 参与者在2D特征空间中执行了一项序列回忆任务,操作方向一致性.
- 磁脑电图 (MEG) 用于分析WM维护期间的神经活动.
- 行为表现和神经激活模式是相关的.
主要成果:
- 在结构化 (一致的方向) 和非结构化 (不一致的方向) 背景下,特别是对于具有较低WM能力的个人而言,WM性能在结构化 (一致的方向) 中得到了增强.
- 一致的序列参与了抽象表征的前和中前额皮层.
- 不一致的序列导致在平行区域的项目特定表示的优先重新激活.
结论:
- 大脑在关系式和基于项目的编码策略之间进行自适应的切换,以减轻WM约束,证明神经效率原理.
- 环境结构显著塑造了WM组织,影响了认知灵活性和神经资源分配.
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