The role of spatial boundaries in shaping long-term event representations
The role of spatial boundaries in shaping long-term event representations
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DOI：
10.1016/j.cognition.2016.05.013
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发表时间：
2016-09-01
期刊：
影响因子：
3.4
通讯作者：
Burgess, Neil
中科院分区：
文献类型：
--
作者：
Horner, Aidan J.;Bisby, James A.;Burgess, Neil
在回忆过去时，我们通常会回忆起在时间和空间上有限制的“事件”。然而，当我们在环境中导航时，我们的感官会接收到持续不断的信息流。我们如何从连续的输入中创造出离散的长期情景记忆？虽然先前的研究已经提供了空间边界在工作记忆中对我们的感官体验进行在线分割中的作用的证据，但尚不清楚这种分割如何有助于随后的长期情景记忆。在这里，我们表明，在编码的空间边界（两个房间之间的门口）的存在损害参与者的能力，后来记住的顺序，对象被提出。在虚拟现实环境中的同一房间中呈现的两个对象的序列比在相邻房间中呈现的两个对象的序列更准确地记住。结果由一个简单的模型捕获，其中项目与随时间逐渐变化的上下文表示相关联，并且在跨越空间边界时变化更快。因此，我们提供的第一个证据表明，长期情景记忆的结构是由一个空间边界的存在，并提供工作记忆和长期记忆之间的相互作用的性质的限制。(C)2016作者（S）由爱思唯尔公司出版。这是一篇开放获取的文章，使用CC BY许可证（http：//creativecommons.org/licenses/by/4.0/）。
When remembering the past, we typically recall 'events' that are bounded in time and space. However, as we navigate our environment our senses receive a continuous stream of information. How do we create discrete long-term episodic memories from continuous input? Although previous research has provided evidence for a role of spatial boundaries in the online segmentation of our sensory experience within working memory, it is not known how this segmentation contributes to subsequent long-term episodic memory. Here we show that the presence of a spatial boundary at encoding (a doorway between two rooms) impairs participants' later ability to remember the order that objects were presented in. A sequence of two objects presented in the same room in a virtual reality environment is more accurately remembered than a sequence of two objects presented in adjoining rooms. The results are captured by a simple model in which items are associated to a context representation that changes gradually over time, and changes more rapidly when crossing a spatial boundary. We therefore provide the first evidence that the structure of long-term episodic memory is shaped by the presence of a spatial boundary and provide constraints on the nature of the interaction between working memory and long-term memory. (C) 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).