在连续视觉运动控制过程中,在小鼠PPC中路由与任务相关的信息
bioRxiv : the preprint server for biology
|January 9, 2026
概括
后壁皮质 (PPC) 编码视觉和运动信息. 然而,从PPC到运动皮质 (M1) 的途径主要传输运动数据,而不是在任务中学习的丰富的视觉信号.
科学领域:
- 神经科学是一个神经科学.
- 系统神经科学 系统神经科学
- 发动机控制器的控制器
背景情况:
- 已知后壁皮质 (PPC) 代表各种变量,包括视觉信息,运动和行为偏见.
- 目前尚不清楚哪些这些表征是从PPC传递给大脑其他区域的,例如主要运动皮层 (M1).
研究的目的:
- 调查从PPC到M1的信息流.
- 为了确定PPC的神经表示的哪些组件被传输到M1.
主要方法:
- 两光子成像被用来记录在2D视觉运动操纵杆任务执行的小鼠中对侧PPC的二/三层神经元中的活动.
- 使用逆行追踪识别了PPC-M1投影神经元.
- 分析的重点是神经对视觉运动和操纵杆运动的选择性.
主要成果:
- PPC神经元表现出混合的选择性,主要由操纵杆运动调节.
- 视觉响应的PPC神经元通过与任务相关的视觉运动表现出更强的调制.
- 相比之下,PPC-M1投影神经元类似地编码了与任务相关的和与任务无关的视觉运动,其中运动信息占主导地位.
结论:
- PPC编码了丰富的视觉,运动和其他信息组合.
- PPC-M1通路主要参与传输运动信息.
- 这种途径似乎并没有将PPC学习的任务相关视觉信号的丰富传播到M1.
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