前肢前运动和主要运动皮层之间的层次结构及其表现在它们的发射模式中
bioRxiv : the preprint server for biology
|May 27, 2024
概括
运动皮层层次存在,但是微妙的. 光遗传性失活显示,在达到时,小鼠前运动和主运动皮层之间存在不对称的影响,这表明部分层次结构并不总是仅仅从神经发射模式中显现出来的.
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
- 计算神经科学是一种神经科学.
背景情况:
- 运动皮质功能通常使用层次模型来描述.
- 这种层次结构在神经发射模式中的确切表现还不太清楚.
- 研究运动皮质区域之间的相互作用对于理解运动控制至关重要.
研究的目的:
- 调查小鼠前肢前运动皮质和初级运动皮质之间的存在和层次结构的性质.
- 为了确定单独的神经发射模式是否准确地反映了层次相互作用.
- 探索网络结构如何影响运动皮层区域之间的信息流.
主要方法:
- 在小鼠中,光遗传失活化被用来探测运动皮质区域之间的因果影响,在达到任务时.
- 进行了多区域电生理记录以捕捉神经活动.
- 构建了双区域网络模型,并与实验数据相匹配.
主要成果:
- 在达到过程中,在前运动皮层和主运动皮层之间观察到不对称的,短暂的延迟影响,这表明部分层次结构.
- 虽然一些活动遵循延迟的模式,但这两个地区的开火都以共享的模式为主.
- 在单个神经元水平上,每个区域的触发同样能够预测另一个区域的触发.
- 网络模型显示了区域对投入的依赖程度的差异,而不是投入量.
结论:
- 鼠标前运动和初级运动皮层之间存在部分层次结构,在达到过程中表现为不对称的影响.
- 仅仅从射击模式推断出人口层面的相互作用和层次结构可能是不够的.
- 网络模型强调了输入依赖的区域差异,这是理解层次处理的关键.
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