在工作记忆中资源分配的神经机制
Hsin-Hung Li1,2, Thomas C Sprague1,3, Aspen H Yoo1
1Department of Psychology, New York University, New York, NY 10003, USA.
Science advances
|April 9, 2025
概括
来自前额皮层的大脑信号调整视觉皮层的记忆优先级. 这种神经机制通过优先考虑相关信息来帮助管理工作记忆能力.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 计算神经科学是一种神经科学.
背景情况:
- 工作内存容量有限,需要根据项目相关性分配资源.
- 在工作记忆中对信息进行优先排序的神经基础尚未得到充分理解.
研究的目的:
- 研究工作记忆优先级的基础的神经机制.
- 解码和区分神经对工作记忆中不同优先级的项目的反应.
主要方法:
- 开发计算神经成像技术来分析神经活动.
- 解码和解混与多个工作记忆项相关的神经信号.
- 关联神经活动模式与记忆优先级的行为测量.
主要成果:
- 视觉皮层 (条形和外条形) 中的神经响应的增加与项目优先级相关.
- 优先级较高的项目以更高的准确性和更少的不确定性被解码.
- 额叶皮层活动预测了视觉皮层的神经差异,将上下控制与表示忠实性联系起来.
结论:
- 来自额叶皮层的反信号调节了基于行为相关性的视觉皮层的神经表征收益.
- 这种机制有助于有效地分配工作内存资源.
- 确定了一个关键的神经通路,用于优先考虑工作记忆中的信息.
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