神经认知任务集表示的层次重构调解认知灵活性
bioRxiv : the preprint server for biology
|February 6, 2026
概括
认知控制使用对目标导向行为的层次表示. 这项研究揭示了灵活感官运动更新与稳定上下文表示的独特神经战略,解释了任务切换成本.
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
- 认知控制 认知控制
背景情况:
- 认知控制组织行动和目标等级,以支持灵活,目标导向的行为.
- 由于需要重新配置任务表示,任务切换会产生成本,但层次需求的神经基础仍然不清楚.
研究的目的:
- 在层次控制任务中调查任务切换成本的行为和神经来源.
- 将上下文重新配置与下属规则切换分离,以了解差异化的灵活性需求.
主要方法:
- 收集了健康人类参与者的功能性MRI和行为数据.
- 引入了一种新的"神经距离"测量方法,以量化试验对试验的神经活动模式的重新配置.
- 利用层次控制任务来区分上下文和下属规则切换.
主要成果:
- 附属规则开关比上下文开关更快,但比上下文开关更容易受到感知干扰.
- 较大的神经距离预测了更大的反应时间 (RT) 开关成本,将神经重组与行为联系起来.
- 语境重构参与了侧向中前皮层,并被隔离了干扰,而附属规则更新发生在感知和运动网络中.
结论:
- 神经表现在层次层次上有所不同,感官运动计划优先考虑灵活性,而上下文表现提供稳定性.
- 独特的神经机制支持灵活更新和干扰屏蔽的上下文控制,解释任务切换成本的变化.
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