Burgess Neil
Institute of Cognitive Neuroscience and Department of Anatomy, University College London, 17 Queen Square, London WC1N 3AR, UK.
Trends Cogn Sci. 2006 Dec;10(12):551-7. doi: 10.1016/j.tics.2006.10.005. Epub 2006 Oct 30.
Recent experiments indicate the need for revision of a model of spatial memory consisting of viewpoint-specific representations, egocentric spatial updating and a geometric module for reorientation. Instead, it appears that both egocentric and allocentric representations exist in parallel, and combine to support behavior according to the task. Current research indicates complementary roles for these representations, with increasing dependence on allocentric representations with the amount of movement between presentation and retrieval, the number of objects remembered, and the size, familiarity and intrinsic structure of the environment. Identifying the neuronal mechanisms and functional roles of each type of representation, and of their interactions, promises to provide a framework for investigation of the organization of human memory more generally.
最近的实验表明，需要修正一种空间记忆模型，该模型由特定视角表征、自我中心空间更新以及用于重新定向的几何模块组成。相反，似乎自我中心表征和异我中心表征是并行存在的，并根据任务结合起来支持行为。当前的研究表明这些表征具有互补作用，随着呈现与检索之间的运动量、记忆对象的数量以及环境的大小、熟悉程度和内在结构的增加，对异我中心表征的依赖也在增加。确定每种类型表征及其相互作用的神经元机制和功能作用，有望为更广泛地研究人类记忆组织提供一个框架。
