Imagining Being Somewhere Else: Neural Basis of Changing Perspective in Space
Imagining Being Somewhere Else: Neural Basis of Changing Perspective in Space
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DOI：
10.1093/cercor/bhr101
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发表时间：
2012-01-01
期刊：
影响因子：
3.7
通讯作者：
Burgess, Neil
中科院分区：
文献类型：
--
作者：
Lambrey, Simon;Doeller, Christian;Burgess, Neil
想象自己身处其他地方，从不同的角度看待环境的能力，对于日常生活中的空间规划以及理解他人的意图、行动和心理状态至关重要。利用功能磁共振成像研究了多目标位置空间更新的神经基础。健康的志愿者在虚拟现实环境中看到桌子上的一系列物体，并想象他们自己的观点或阵列的旋转运动。然后，他们对物体位置的记忆通过变化检测任务进行测试。行为结果证实了想象的视点变化的优势相比，想象的阵列旋转的大小相等。物体位置的编码与一个区域网络有关，包括双侧上级和下顶叶皮质。楔前叶还被视点旋转和阵列旋转的要求激活。顶枕沟/压后皮质和海马还被激活的观点旋转的要求，而阵列旋转与激活的右侧顶内沟。这些研究结果支持一个计算模型的空间记忆，顶枕沟/压后皮质介导的空间更新的一部分，翻译过程之间的“自我中心”和“allocentric”的参考框架。
The capacity to imagine being somewhere else and seeing the environment from a different point of view is crucial for spatial planning in daily life and for understanding the intentions, actions, and state of mind of other people. The neural bases of spatial updating of multiple object locations were investigated using functional magnetic resonance imaging. Healthy volunteers saw an array of objects on a table in a virtual reality environment and imagined movement of their own viewpoint or rotation of the array. Their memory for the locations of the objects was then tested with a change-detection task. Behavioral results confirmed the advantage for imagined viewpoint change compared with imagined array rotation of equivalent size. Encoding of object locations was associated with a network of areas, including bilateral superior and inferior parietal cortices. The precuneus was additionally activated by the demands of both viewpoint- and array rotation. The parieto-occipital sulcus/retrosplenial cortex and hippocampus were additionally activated by the demands of viewpoint rotation, while array rotation was associated with activation of the right intraparietal sulcus. These findings support a computational model of spatial memory in which parieto-occipital sulcus/retrosplenial cortex mediates spatial updating as part of a process of translation between "egocentric" and "allocentric" reference frames.