Engagement of neural circuits underlying 2D spatial navigation in a rodent virtual reality system.

Engagement of neural circuits underlying 2D spatial navigation in a rodent virtual reality system.
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DOI:
10.1016/j.neuron.2014.08.042
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发表时间:
2014-10-22
期刊:
影响因子:
16.2
通讯作者:
Tank, David W.
Tank, David W.
中科院分区:
医学1区
文献类型:
--
作者:
Aronov, Dmitriy;Tank, David W.

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虚拟现实(VR)可以精确控制动物的环境和其他不可能的实验操作。导航啮齿动物的神经活动已经在虚拟线性轨道上进行了研究。然而,空间导航系统在完全二维环境中的参与尚未显示。我们描述了一个用于大鼠的VR设置,包括控制软件和大型电生理系统,该系统通过允许动物旋转和向任何方向行走来支持2D导航。包括位置细胞、网格细胞、头向细胞和边缘细胞在内的内鼻-海马回路在VR中显示出与真实的世界相似的二维活动模式。海马神经元对虚拟环境的外观或形状的变化表现出各种重新映射反应,包括一种新的形式,其中VR诱导的线索冲突导致重新映射锁定到几何形状,而不是突出的线索。这些结果表明,导航大鼠的新型实验操作的通用工具。
Virtual reality (VR) enables precise control of an animal’s environment and otherwise impossible experimental manipulations. Neural activity in navigating rodents has been studied on virtual linear tracks. However, the spatial navigation system’s engagement in complete two-dimensional environments has not been shown. We describe a VR setup for rats, including control software and a large-scale electrophysiology system, which supports 2D navigation by allowing animals to rotate and walk in any direction. The entorhinal-hippocampal circuit, including place cells, grid cells, head direction cells and border cells, showed 2D activity patterns in VR similar to those in the real world. Hippocampal neurons exhibited various remapping responses to changes in the appearance or the shape of the virtual environment, including a novel form in which a VR-induced cue conflict caused remapping to lock to geometry rather than salient cues. These results suggest a general-purpose tool for novel types of experimental manipulations in navigating rats.
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