Categorical and coordinate spatial representations within object-location memory
Categorical and coordinate spatial representations within object-location memory
复制标题
对象位置内存中的分类和坐标空间表示
DOI：
10.1016/j.cortex.2006.05.005
复制
发表时间：
2008
期刊：
影响因子：
3.6
通讯作者：
A. Postma
中科院分区：
文献类型：
--
作者：
M. Asselen;M. Asselen;R. Kessels;L. Kappelle;A. Postma
空间记忆的一个重要方面是记住我们周围物体的位置的能力。有证据表明，空间信息可以用不同的方式表示，包括坐标表示（细粒度、度量信息）和分类表示（上/下、右/左关系）。当前的研究旨在调查单独编码位置信息以及在内存中整合位置信息和对象信息时对分类和坐标信息可能产生的侧化效应。 25 名中风患者和 36 名健康对照者接受了不同的测试，评估分类和坐标位置记忆，以及分类和坐标物体到位置记忆。包括（Laeng，1994）使用的身份任务以及用于测量分类和坐标信息的偏侧化效应的控制任务。此外，还评估了物体识别和视觉空间感知。结果表明，左半球和右半球的病变分别损害了分类和坐标空间信息的处理。当空间信息必须与物体信息整合时，没有发现偏侧化效应。这些结果与物体位置记忆的功能成分及其潜在的半球基础有关。
An important aspect of spatial memory is the ability to remember the positions of objects around us. There is evidence that spatial information can be represented in different ways, involving a coordinate representation (fine-grained, metric information) and a categorical representation (above/below, right/left relations). The current study is aimed at investigating possible lateralization effects for categorical and coordinate information when encoding position information alone and when integrating position information and object information in memory. Twenty-five patients who had suffered from a stroke and 36 healthy controls were tested with different tests assessing categorical and coordinate position memory, and categorical and coordinate object-to-position memory. The identity task that was used by (Laeng, 1994) was included as well as a control task for measuring lateralization effect for categorical and coordinate information. Moreover, object-recognition and visuo-spatial perception were assessed. The results showed that processing categorical and coordinate spatial information were impaired by a lesion in the left and right hemisphere, respectively. No lateralization effects were found when spatial information had to be integrated with object information. These results bear on the functional components of object-location memory and their underlying hemispheric basis.