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在运动学习过程中,VIP内部神经元中出现准备动态
Sergio Arroyo1, Sapeeda Barati1, Kyungsoo Kim1
1Department of Neurology, Weill Institute for Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA.
Cell reports
|July 19, 2023
概括
小鼠通过调整二级运动皮层 (M2) 中的神经活动来学习感觉运动任务 (M2). 血管肠道 (VIP) 内神经元表现出准备和运动活动,而体静止素 (SST) 内神经元在运动期间稍后激活.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 学习和记忆的学习和记忆
背景情况:
- 在动物中,二级运动皮层 (M2) 对于整合感官信息和计划运动动作至关重要.
- 了解特定内部神经元群体的作用,如血管肠道 (VIP) 和体静止素 (SST) 内神经元,是解读学习过程中M2功能的关键.
研究的目的:
- 调查M2中VIP和SST内部神经元在获取基于提示的触及到抓取 (RTG) 任务期间的动态活动.
- 阐明这些内部神经元群体如何促进感觉运动学习以及感觉处理和运动执行的细分.
主要方法:
- 在小鼠执行已学习的RTG任务时的电生理记录.
- 在M2内分析VIP和SST内部神经元中的神经活动.
- 主要组件分析 (PCA) 用于描述人口动态.
主要成果:
- 在运动学习过程中,VIP内部神经元的一个子集表现出准备性活动,包括感官反应和升级激活.
- VIP神经元活动显示了分隔的动态,PC1与运动相关,PC2与准备活动相关.
- 随着学习的进展,SST神经元在运动阶段显示较晚和更同步的激活.
结论:
- VIP内部神经元的群体动态可以通过支持不同的预备和运动相关功能来促进感觉运动学习.
- 观察到的VIP神经元活动的细分表明,在M2内,有分离感官处理和运动执行的机制.
- VIP和SST内部神经元的不同时间激活模式凸显了它们在获得运动技能的独特作用.
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