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在触觉工作记忆中的延迟和检索期间,任务需求调节体感官前对象网络
Dexin Sun1,2, Jian Zhang3, Shuyue Fu3
1Research Center for Medical Artificial Intelligence, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China.
主体体感官皮质 (SI) 在触觉工作记忆 (TWM) 中发挥着关键作用. 它与前双 (FP) 路径相互作用,显示出与更高任务需求的连接性增加.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
背景情况:
- 主体体感官皮质 (SI) 传统上被视为感官处理区域.
- 新出现的证据表明,SI涉及触觉工作记忆 (TWM) 和与前端对面 (FP) 路径的相互作用.
研究的目的:
- 调查SI在TWM期间的神经动态.
- 检查任务需求如何调节SI在不同TWM阶段与FP路径的相互作用.
主要方法:
- 使用高场fMRI和定制的气动触觉刺激装置.
- 在延迟和检索阶段实施了反提示任务,操纵了任务需求.
- 在TWM的编码,延迟和检索阶段隔离和分析神经活动.
主要成果:
- 随着任务需求的增加,SI和FP区域之间的功能连接增加了.
- 有效的连接揭示了需求依赖的激发性相互作用:维护期间PPC到SI,在操纵期间PPC到dlPFC/dlPFC到SI.
- SI证明了整个TWM的FP区域与需求依赖的激发性相互作用.
结论:
- SI积极参与TWM的维护和操作.
- SI在TWM中的作用是由任务需求通过与FP路径的相互作用来调节的.
- 这些发现支持SI在TWM过程中超越感官编码的核心作用.
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