Path integration in 3D from visual motion cues: A human fMRI study
Path integration in 3D from visual motion cues: A human fMRI study
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DOI：
10.1016/j.neuroimage.2016.07.008
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发表时间：
2016-11-15
期刊：
影响因子：
5.7
通讯作者：
Lacquaniti, Francesco
中科院分区：
文献类型：
--
作者：
Indovina, Iole;Maffei, Vincenzo;Lacquaniti, Francesco
虽然偏航平面上的路径整合的神经相关性已经被广泛研究，但关于三维（3D）中的路径整合知之甚少。在这里，我们使用功能磁共振成像在虚拟导航隧道内的伪3D。我们发现，相同的视觉运动刺激在大脑中的编码不同，这取决于它们是否代表偏航平面或俯仰平面内的位移。偏航平面在海马中更多地表示，而俯仰平面在角回（AG）和后颞下回（pITG）中更多地表示，已知其参与3D空间编码。此外，pITG中的一个区域，位于前一个区域的上方，通过多体素分析显示出两种不同的模式，分别编码为俯仰平面和偏航平面。这些结果表明，编码在pITG的偏航平面的信息可以与海马体交换，而有关的俯仰平面的信息可以与AG交换。(C)2016 Elsevier Inc. All rights reserved.
While neural correlates of path integration on a yaw plane have been studied extensively, much less is known about path integration in three-dimensions (3D). Here we used fMRI during virtual navigation within tunnels in pseudo-3D. We found that the same visual motion stimuli are encoded differently in the brain depending on whether they represent displacements within the yaw plane or within the pitch plane. The yaw plane is more represented in the hippocampus while the pitch plane is more represented in the angular gyrus (AG) and in the posterior inferior temporal gyrus (pITG), known to be involved in 3D space encoding. In addition, a region in pITG, located just above the previous one, showed two-different patterns withmulti-voxel analysis, separately coding for the pitch and yaw planes. These results suggest that information encoded within pITG about the yaw plane may be exchanged with the hippocampus, while information about the pitch plane may be exchanged with the AG. (C) 2016 Elsevier Inc. All rights reserved.