PDF(Pubmed)
Abstract：
We reliably judge locations of static objects when we walk despite the retinal images of these objects moving with every step we take. Here, we showed our brains solve this optical illusion by adopting an allocentric spatial reference frame. We measured perceived target location after the observer walked a short distance from the home base. Supporting the allocentric coding scheme, we found the intrinsic bias , which acts as a spatial reference frame for perceiving location of a dimly lit target in the dark, remained grounded at the home base rather than traveled along with the observer. The path-integration mechanism responsible for this can utilize both active and passive (vestibular) translational motion signals, but only along the horizontal direction. This asymmetric path-integration finding in human visual space perception is reminiscent of the asymmetric spatial memory finding in desert ants, pointing to nature\'s wondrous and logically simple design for terrestrial creatures.
摘要：
我们在行走时可靠地判断静态物体的位置，尽管这些物体的视网膜图像随着我们的每一步都在移动。这里,我们展示了我们的大脑通过采用非中心空间参考框架来解决这种错觉。在观察者从基地走了一小段距离后，我们测量了感知的目标位置。支持分配中心编码方案，我们发现了内在的偏见，作为空间参考框架，用于在黑暗中感知光线昏暗的目标的位置，留在基地，而不是和观察者一起旅行。对此负责的路径整合机制可以利用主动和被动（前庭）平移运动信号，但只能沿着水平方向。人类视觉空间感知中的这种非对称路径整合发现让人想起了沙漠蚂蚁中的非对称空间记忆发现，指向自然的奇妙和逻辑上简单的设计为陆地生物。
