方向和目标方向的持续整合指导着转向
Anthony M Crown1, Annie H Wu1, Lindsey Hofflander1
1Department of Neuroscience, Brown University, Providence, RI 02912, USA; Carney Institute for Brain Science, Brown University, Providence, RI 02912, USA.
bioRxiv : the preprint server for biology
|November 1, 2024
概括
果使用它们的中央复合体来导航,整合诸如风和光流等感官线索. 这项研究表明,该区域内的特定神经元 (PFN) 如何控制方向盘,从而实现精确,目标导向的运动.
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 感官整合 感官整合
背景情况:
- 动物整合多个感官线索用于导航和运动.
- 昆虫的中央综合体,特别是风扇形体 (FB),对于引导导航的感觉运动转换至关重要.
- 在导航过程中,FB神经元活动在决定运动运动行为的确切作用尚未得到充分理解.
研究的目的:
- 研究风扇形体 (FB) 中的神经元活动如何决定导航期间的运动行为.
- 阐明特定神经元群体 (PFN) 与驾驶行为之间的因果关系.
- 提出一个中央复杂介导机动和感觉引导方向盘的模型.
主要方法:
- 操纵PFN_a和PFN_d神经元中的活动,这些神经元分别编码风羽和光流线索.
- 在对单向光流的反应中观察飞转向行为的观察.
- 对PFN的光遗传激活,以引入虚拟方向信号并评估与方向盘的因果关系.
主要成果:
- 表现出曲的行走轨迹与单向光流,一种行为被废除沉默PFN_d神经元.
- PFN的光遗传激活表明它们的活动和方向盘之间存在因果关系.
- 中央综合体整合了PFN的方向信号,以指导方向盘,转移运动向左或向右.
结论:
- 中央复合体通过汇总PFN的方向信号来指导机动,从而影响转向.
- 这种机制允许通过不断整合方向和目标方向,精细控制感觉引导的方向盘.
- 提出了一个模型,即通过整合方向和目标信息随着时间的推移来实现精确的转向.
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