Visual and vestibular influences on head-direction cells in the anterior thalamus of the rat
Visual and vestibular influences on head-direction cells in the anterior thalamus of the rat
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DOI：
10.1037/0735-7044.110.4.643
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发表时间：
1996-08-01
影响因子：
1.9
通讯作者：
Sharp, PE
中科院分区：
文献类型：
--
作者：
Blair, HT;Sharp, PE
当大鼠在空间中导航时，头部方向细胞提供一个持续的瞬时方向信号。这种方向信号被认为部分是由航位推算机制产生的，该机制使用角运动信息来不断更新方向表示。本研究探讨了何种角运动信息可用于航位推算。在一个可旋转的圆柱形室中记录了大鼠的丘脑前侧头向细胞，这些细胞可以独立地传递视觉运动信号和前庭信号。结果表明，这两种角度运动线索都对头部方向细胞有影响，因此可以用于航位推算。作者得出结论，前庭和视觉运动线索与视觉地标和运动信号一起相互作用，以确定方向参考框架。
As a rat navigates through space, head-direction cells provide an ongoing signal of its momentary directional heading. This directional signal is thought to be generated, in part, by a dead-reckoning mechanism that uses angular motion information to constantly update the directional representation. This study investigated what kinds of angular motion information might be used for dead reckoning. Anterior thalamic head-direction cells were recorded from rats in a rotatable, cylindrical chamber, which could independently deliver visual motion cues and vestibular cues. Results suggest that both of these angular motion cues have an influence on head-direction cells and may thus br used for dead reckoning. The authors conclude that vestibular and visual movement cues work interactively, along with visual landmarks and motor signals, to determine the directional frame of reference.