时间控制的并行过程在补充动力区域和前侧平行电路中进行
Xuanyu Wang1,2, Shunyu Shi1, Yan Bao1,3,4
1School of Psychological and Cognitive Sciences, Peking University, Beijing, China.
PsyCh journal
|December 18, 2023
概括
这项研究澄清了定时持续时间的大脑机制. 它发现了用于主动定时,运动准备和持续记忆的独特的神经回路,基底和丘脑提供了必要的时间协调.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 心理学 心理学 心理学
背景情况:
- 主动定时涉及到可以在几秒钟内访问的认知过程.
- 神经成像涉及基底 (BG) 和补充运动区域 (SMA) 的时间.
- 这些区域的确切作用和组织是不清楚的,因为重叠的认知功能.
研究的目的:
- 从并发的认知过程中分离与主动定时相关的神经活动.
- 识别与持续时间感知和复制有关的独特的神经回路.
- 阐明皮层下和皮层结构在时间上的功能贡献.
主要方法:
- 使用一个持续时间复制任务与感觉和运动控制条件.
- 采用功能神经成像来比较不同条件的血液动力学反应.
- 应用分析方法来分解与不同认知过程相关的神经活动.
主要成果:
- 分离了两个不同的皮质神经回路.
- 确定SMA涉及到主动计时和运动准备.
- 揭示了与持续工作记忆相关的前额头-双额头电路.
- 证明BG和丘脑在时间协调中的皮层下参与.
结论:
- 皮层电路代表不同抽象级别的持续时间内容.
- SMA对于运动准备和主动计时至关重要.
- 一个前额头-双额头网络支持持续工作记忆.
- 皮下结构 (BG,体) 提供了整个大脑协调的基本时间框架.
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