Visual search is slowed when visuospatial working memory is occupied
Visual search is slowed when visuospatial working memory is occupied
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DOI：
10.3758/bf03196569
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发表时间：
2004-04-01
影响因子：
3.5
通讯作者：
Luck, SJ
中科院分区：
文献类型：
--
作者：
Woodman, GF;Luck, SJ
视觉工作记忆在大多数视觉搜索模式中起着核心作用。然而，最近的一项研究表明，当工作记忆被并发对象记忆任务填满时，搜索效率并没有受到影响(Woodman，Vogel，&Luck，2001)。物体和位置可以存储在单独的工作记忆子系统中，视觉搜索依赖于空间子系统，而不是对象子系统，这似乎是合理的。在本研究中，我们试图确定在视觉工作记忆中保持空间信息是否会损害同时进行的视觉搜索任务的效率。当搜索和记忆任务同时执行时，视觉搜索效率和空间记忆准确度都比分别执行这两个任务时受到损害。这些发现表明，在困难的视觉搜索任务中，常见的机制被用来处理信息，并在工作记忆中保持空间信息。
Visual working memory plays a central role in most models of visual search. However, a recent study showed that search efficiency was not impaired when working memory was filled to capacity by a concurrent object memory task (Woodman, Vogel, & Luck, 2001). Objects and locations may be stored in separate working memory subsystems, and it is plausible that visual search relies on the spatial subsystem, but not on the object subsystem. In the present study, we sought to determine whether maintaining spatial information in visual working memory impairs the efficiency of a concurrent visual search task. Visual search efficiency and spatial memory accuracy were both impaired when the search and the memory tasks were performed concurrently, as compared with when the tasks were performed separately. These findings suggest that common mechanisms are used to process information during difficult visual search tasks and to maintain spatial information in working memory.