优先考虑工作记忆资源取决于前额叶皮层
Grace E Hallenbeck1, Nathan Tardiff1, Thomas C Sprague1,2
1Department of Psychology, New York University.
bioRxiv : the preprint server for biology
|November 1, 2024
概括
前额叶皮质控制工作记忆资源的分配,而不仅仅是存储. 破坏这种控制可以改善低优先级项目的内存,支持资源分配模型.
科学领域:
- 认知神经科学 认知神经科学
- 神经生物学 神经生物学 神经生物学
背景情况:
- 前额叶皮质在工作记忆中的确切作用受到争论,理论集中在记忆存储与内容控制上.
- 了解这种区别对于推进认知神经科学和开发有针对性的干预措施至关重要.
研究的目的:
- 调查前额叶皮质主要是存储工作记忆还是控制其优先级.
- 在工作记忆中区分内存存储和资源分配模型的前额叶皮质功能.
主要方法:
- 利用跨磁刺激 (TMS) 来扰乱人类参与者 (两性) 的侧面前额皮质.
- 采用工作记忆任务,需要对记忆项进行行为优先排序.
- 开发了一个计算模型来预测控制中断对记忆性能的影响.
主要成果:
- 上部前中心的TMS,但不是内侧,破坏了资源优先级.
- 这种干扰导致了对低优先级项目的内存的反直觉改进,与模型预测保持一致.
- 证明了前额叶皮质控制和工作记忆资源分配之间的因果关系.
结论:
- 前额叶皮质积极控制支持工作记忆的认知资源的分配.
- 这些发现支持了强调前额叶皮质在动态资源管理中的作用,而不是被动记忆存储的模型.
- 为工作记忆中前额叶皮层功能资源分配理论提供因果关系证据.
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