在尾大脑垂体中编码翻译和倾斜的参考框架
Félix Buron1, Christophe Z Martin1, Jessica X Brooks1
1Département de Neurosciences, Université de Montréal, Montréal, Québec H3C 3J7, Canada.
概括
大脑使用前庭信号来估计运动. 研究人员发现,尾大脑小虫将倾斜和翻译编码为以头为中心,而不是以身体为中心的坐标.
科学领域:
- 神经科学是一个神经科学.
- 感官系统 感官系统
- 大脑小叶的功能
背景情况:
- 对自我运动和身体方向的准确感知对于日常活动至关重要.
- 前体系统,特别是耳骨器官和半圆通道,提供必要的感官信息.
- 尾大脑小虫 (节节和腹,NU) 参与处理前庭信号,以区分头部翻译与倾斜.
研究的目的:
- 调查尾脑小虫 (NU) 中神经对运动和方向的估计是否以以头为中心或以身体为中心的参考框架表示.
- 确定NU普尔金耶细胞的空间调整如何在不同的方向下反映耳骨和通道输入.
主要方法:
- 检查了雄性 rhesus 的 NU 中的翻译和倾斜选择性普尔金耶细胞的 3D 空间调整.
- 多种各样的头对身体和身体对重力方向,以评估细胞反应如何变化.
主要成果:
- 在翻译过程中,NU细胞的调特性与耳骨质信号的以头为中心的编码保持一致.
- 道信号在NU中被转换为世界参照的倾斜旋转信号,但这些倾斜估计仍然是以头部为中心的坐标.
结论:
- 尾大脑小虫 (NU) 主要在以头为中心的参考框架中编码前庭导向的运动和方向估计.
- 身体中心的运动和定向计算,对于姿势控制和导航至关重要,可能发生在NU的下游或平行路径上.
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