在后壁皮层中依赖于重力的参考框架选择
Junyu Zhao1, Baishun An1, Ning Cheng2
1Brain Research Centre, Department of Neuroscience, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China.
Current biology : CB
|September 18, 2025
概括
根据重力和视觉线索,小鼠可以灵活地在后壁皮质 (PPC) 中切换参考框架. 这种适应能力在复杂的自然环境中增强了空间导航策略.
科学领域:
- 神经科学是一个神经科学.
- 空间导航 空间导航
- 计算神经科学是一种神经科学.
背景情况:
- 空间导航依赖于参考框架,但神经元组合如何在自然条件下选择这些框架,如斜坡地形,尚不清楚.
- 后壁皮质 (PPC) 对于导航和运动控制至关重要,可容纳多种不同的参考框架.
- 了解参考框架选择是解读空间定向的神经机制的关键.
研究的目的:
- 为了研究重力信号如何影响老鼠PPC的自我中心和非中心的参考框架.
- 检查视觉输入和引力信号之间的不匹配对神经调的影响.
- 为了确定PPC神经元在导航过程中对参考框架选择的灵活性.
主要方法:
- 通过为小鼠倾斜地面,引入视觉输入和引力信号之间的冲突.
- 记录神经活动在后壁皮层 (PPC) 分析头部方向和边界轴承调整.
- 在水平和倾斜条件下比较神经反应,以评估参考框架的利用.
主要成果:
- 改变的重力信号有所不同地影响了偏心的头部方向调整 (加强) 和自我中心的边界轴承调整 (减弱).
- 头部方向调整变得不那么一致,信号固定在视觉或引力参考框架中.
- 由于引力和视觉输入之间的不匹配增加,重力定头部方向单元占主导地位;单个单元切换了参考框架.
结论:
- 后壁皮层 (PPC) 神经元表现出基于任务需求和感官输入的灵活参考框架选择.
- 这种神经灵活性使得在具有不同引力和视觉线索的自然环境中能够有效地执行导航策略.
- 单个神经元可以动态地在参考框架之间切换,突出显示空间表示的适应性.
关键词:
是一个非中心的,全中心的.的成像成像技术可以帮助我们.自我中心的边界细胞.的参考框架.重力 引力 引力 引力头部方向细胞的方向是后面的顶层皮层皮层.脑后大脑皮层 (retrosplenial cortex) 的一个部分.虚拟现实 虚拟现实 虚拟现实 虚拟现实视觉 视觉 视觉 视觉 视觉 视觉更多相关视频
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